Saunders v. Commissioner of Correction ( 2022 )


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    WILLIE A. SAUNDERS v. COMMISSIONER
    OF CORRECTION
    (SC 20430)
    Robinson, C. J., and McDonald, D’Auria, Mullins,
    Kahn, Ecker and Keller, Js.
    Syllabus
    The petitioner, who had been convicted of the crimes of sexual assault and
    risk of injury to a child, sought a writ of habeas corpus, claiming that
    his rights to due process were violated because, at the time of his
    criminal trial, he suffered from severe intellectual disabilities and physio-
    logical and mental health afflictions that rendered him incompetent to
    stand trial. He further alleged that, during his criminal trial, neither
    his trial counsel, the state, nor the trial court sought a competency
    examination for him, in violation of statute (§ 54-56d). At his criminal
    trial and on direct appeal to the Appellate Court, which upheld his
    conviction, the petitioner did not raise any claim regarding his compe-
    tency to stand trial. The respondent, the Commissioner of Correction,
    filed a return in response to the petitioner’s habeas petition, asserting
    that the petitioner had procedurally defaulted because his due process
    claims were not raised during his criminal trial or on direct appeal and
    that he could not establish cause and prejudice to excuse the procedural
    defaults. The petitioner filed a reply, in which he asserted that the
    defense of procedural default did not apply to his due process claims,
    that he could not have raised those claims previously because of his
    developmental and intellectual disabilities, and, in the alternative, that
    he could establish cause and prejudice to overcome the procedural
    defaults. The respondent filed a motion to dismiss, and the habeas
    court granted that motion and rendered judgment dismissing the habeas
    petition. The habeas court determined that the petition and reply were
    deficient because an allegation of incompetency was legally insufficient
    to establish cause and prejudice. Accordingly, the habeas court con-
    cluded that the petitioner’s due process claims were procedurally
    defaulted and that he had failed to allege legally cognizable cause and
    prejudice to overcome the defaults. On the granting of certification, the
    petitioner appealed to the Appellate Court, which upheld the habeas
    court’s judgment. On the granting of certification, the petitioner appealed
    to this court, claiming, inter alia, that the Appellate Court incorrectly had
    concluded that the procedural default doctrine applies to competency
    claims. Held:
    1. The Appellate Court correctly concluded that the petitioner’s competency
    claim was subject to the procedural default doctrine, as the prudential
    interests in finality and uniformity underlying that doctrine militated
    against carving out an exception to it for competency claims: application
    of the procedural default doctrine to competency claims encourages
    the timely assertion of those claims when the trial court is in the best
    position to determine competency and to provide a timely remedy, and
    the passage of time could result in the potential for loss of evidence or
    the improvement or deterioration of the petitioner’s condition, and could
    hinder a habeas court’s ability to make a meaningful determination
    regarding a petitioner’s competency at the time of his criminal trial;
    moreover, this court has emphasized the importance of applying the
    cause and prejudice standard consistently to all procedural defaults and
    has recognized only two exceptions to the application of the procedural
    default doctrine, including for claims of actual innocence, and the rea-
    sons that led this court to carve out those exceptions were not applicable
    in the context of competency claims; furthermore, this court declined
    to follow federal cases that have held, pursuant to the waiver rule of
    Wainwright v. Sykes (
    433 U.S. 72
    ), that procedural default does not
    apply to substantive competency claims, as the great weight of federal
    and Connecticut habeas jurisprudence since Wainwright has transiti-
    oned from a waiver standard to a forfeiture standard for procedural
    default, and the procedural default standard in Connecticut is more
    akin to forfeiture, which addresses the petitioner’s timing in raising a
    constitutional claim rather than the mental state driving the petitioner’s
    decision to waive such a claim.
    2. The Appellate Court incorrectly concluded that the petitioner had failed
    to allege sufficient cause and prejudice to overcome his procedural
    defaults:
    a. This court rejected the Appellate Court’s conclusion that mental incom-
    petency is internal, rather than external, to the petitioner and, thus, that
    a claim of incompetency is legally insufficient to satisfy the cause prong
    of the cause and prejudice standard: the term ‘‘internal’’ is defined as
    something fairly attributable to the petitioner, whether cause is internal
    presumes a level of participation by the petitioner in his defense, and
    the duty that § 54-56d (c) imposes on trial counsel, the state, and the
    trial court to raise the issue of competency indicates that incompetency
    is external to the petitioner; moreover, there was a lack of precedential
    support for the respondent’s claim that, on collateral review, procedurally
    defaulted due process competency claims must be brought with an
    accompanying ineffective assistance of counsel claim, as habeas petition-
    ers are not precluded from raising freestanding competency claims,
    when, as in the present case, an objective factor is external to the defense
    yet still tangential to effective assistance of counsel.
    b. The habeas court incorrectly determined that the petitioner had failed
    to allege sufficient prejudice to survive the respondent’s motion to dis-
    miss: the petitioner sufficiently alleged that, if the trial court had him
    evaluated, his several cognitive limitations and significant physiological
    and mental health afflictions would have established that he was incom-
    petent to stand trial, was not restorable to competency and, therefore,
    would not have been tried and convicted; accordingly, the judgment was
    reversed and the case was remanded so that the petitioner could produce
    evidence to support his claim and to rebut the defense of procedural
    default.
    Argued October 18, 2021—officially released April 19, 2022
    Procedural History
    Amended petition for a writ of habeas corpus, brought
    to the Superior Court in the judicial district of Tolland,
    where the court, Kwak, J., granted the respondent’s
    motion to dismiss and rendered judgment thereon, from
    which the petitioner, on the granting of certification,
    appealed to the Appellate Court, Alvord, Prescott and
    Moll, Js., which affirmed the judgment of the habeas
    court, and the petitioner, on the granting of certifica-
    tion, appealed to this court. Reversed; further proceed-
    ings.
    Vishal K. Garg, for the appellant (petitioner).
    Robert J. Scheinblum, senior assistant state’s attor-
    ney, with whom, on the brief, were Maureen Platt,
    state’s attorney, Bruce R. Lockwood, supervisory assis-
    tant state’s attorney, and Eva B. Lenczewski, former
    supervisory assistant state’s attorney, for the appellee
    (respondent).
    Opinion
    D’AURIA, J. In this certified appeal, we must deter-
    mine whether the defense of procedural default, which
    prevents courts from reaching the merits of a constitu-
    tional claim raised for the first time in a habeas proceed-
    ing in the absence of a showing of cause and prejudice,
    applies to a due process claim that is based on incompe-
    tency to stand trial.
    The petitioner, Willie A. Saunders, appeals from the
    judgment of the Appellate Court, which upheld the
    habeas court’s dismissal of his petition for a writ of
    habeas corpus as barred by procedural default. The
    petitioner claims that the Appellate Court incorrectly
    concluded that (1) the defense of procedural default
    applies to competency claims, and (2) his pleadings
    failed to allege sufficient cause and prejudice to over-
    come the procedural default defense. We disagree with
    the petitioner that competency claims are categorically
    exempt from being procedurally defaulted because
    incompetency may satisfy the cause and prejudice stan-
    dard to excuse a procedural default. In the petitioner’s
    case, our review of the petition leads us to conclude
    that his pleadings met the standard necessary to survive
    a motion to dismiss. Accordingly, we reverse the Appel-
    late Court’s judgment and remand the case to that court
    with direction to remand it to the habeas court for
    an evidentiary hearing on the threshold question of
    whether the petitioner was incompetent at the time of
    his underlying criminal trial or his direct appeal and, if
    so, whether he suffered any resulting prejudice, thereby
    excusing his procedural default.
    The Appellate Court’s opinion contains the pertinent
    facts and procedural history; see Saunders v. Commis-
    sioner of Correction, 
    194 Conn. App. 473
    , 475–81, 
    221 A.3d 810
     (2019); which we summarize in relevant part.
    A jury found the petitioner guilty of sexual assault in
    the first degree in violation of General Statutes § 53a-
    70 (a) (2) and risk of injury to a child in violation of
    General Statutes § 53-21 (a) (2). Id., 477. The trial court
    sentenced the petitioner to ten years of imprisonment
    followed by fifteen years of special parole. Id. The peti-
    tioner appealed to the Appellate Court, claiming that
    ‘‘the state adduced insufficient evidence to sustain his
    conviction . . . the trial court improperly allowed the
    state to comment on missing witnesses during final
    argument, and the . . . state engaged in prosecutorial
    impropriety during final argument and, therefore,
    deprived him of his due process right to a fair trial.’’
    (Internal quotation marks omitted.) Id., 477–78 n.3. The
    petitioner raised no claim regarding his competency
    to stand trial. See id. The Appellate Court upheld the
    petitioner’s conviction on direct appeal; see State v.
    Saunders, 
    114 Conn. App. 493
    , 509, 
    969 A.2d 868
    , cert.
    denied, 
    292 Conn. 917
    , 
    973 A.2d 1277
     (2009); and this
    court denied his petition for certification to appeal.
    State v. Saunders, 
    292 Conn. 917
    , 
    973 A.2d 1277
     (2009).
    The present case is the petitioner’s second in which
    he seeks a writ of habeas corpus.1 He raises claims of
    two ‘‘due process violations under the fifth and four-
    teenth amendments to the United States constitution
    and article first, §§ 8 and 9, of the Connecticut constitu-
    tion on the grounds that [he] was incompetent to be
    prosecuted and to stand trial . . . .’’ Saunders v. Com-
    missioner of Correction, supra, 
    194 Conn. App. 478
    .
    Count one of his habeas petition alleges that, at the time
    of trial, the petitioner suffered from severe intellectual
    disabilities, including ‘‘an inability to read or write, a
    diagnosis of ‘mental retardation’ at a young age, and
    brain functioning equivalent to that of a ten year old
    child.’’ 
    Id.
     Because of these deficiencies, the petitioner
    alleges, he ‘‘could not comprehend the nature of the
    criminal proceedings against him, other than the gen-
    eral nature of the charges and the fact that he was
    facing incarceration if convicted.’’ 
    Id.
     Count two of the
    petition alleges that, at the time of trial, the petitioner
    also suffered from ‘‘significant physiological and mental
    health afflictions,’’ including ‘‘a long history of epileptic
    seizures, a visibly misshapen head, paranoia, schizo-
    phrenia, and depression, and that he had been hospital-
    ized on numerous occasions in North Carolina prior to
    his arrest . . . .’’ 
    Id., 479
    . Both counts allege that his
    trial counsel, the state, and the trial court failed to
    request a competency examination during the course
    of the proceedings, in violation of General Statutes § 54-
    56d. Id., 478–79.
    The respondent, the Commissioner of Correction,
    filed a return denying the petitioner’s material allega-
    tions and asserting several affirmative defenses, includ-
    ing procedural default as to both counts of the petition.
    Id., 479. The respondent argued that the petitioner did
    not raise his due process claims regarding competency
    to stand trial during his criminal trial or on direct appeal
    and, therefore, had procedurally defaulted. Id., 479–80.
    The respondent further contended that the petitioner
    could not establish sufficient cause and prejudice to
    excuse the defaults. Id., 480.2 The petitioner, in his reply,
    argued that the defense of procedural default did not
    apply to his due process claims, that he could not have
    raised those claims previously because of his develop-
    mental and intellectual disabilities, and, in the alterna-
    tive, that he could establish cause and prejudice to over-
    come the procedural defaults. Id.
    The respondent moved to dismiss the second habeas
    petition on the ground that the petitioner’s due process
    claims were procedurally defaulted. Id., 480–81. The
    habeas court granted the motion, ‘‘determin[ing] that
    the petitioner’s due process claims were procedurally
    defaulted and that he had failed to allege legally cogniza-
    ble cause and prejudice to overcome the procedural
    defaults.’’ (Footnotes omitted.) Id., 481.
    The habeas court granted the petitioner certification
    to appeal to the Appellate Court, which upheld the habeas
    court’s judgment. See id., 481, 504. We granted the peti-
    tioner’s petition for certification to appeal, limited to the
    following issues: (1) ‘‘Did the Appellate Court correctly
    conclude that the doctrine of procedural default applies
    to competency claims?’’ And (2) ‘‘[d]id the Appellate
    Court correctly conclude that the petitioner’s pleadings
    failed to allege sufficient cause and prejudice to over-
    come a procedural default?’’ Saunders v. Commis-
    sioner of Correction, 
    334 Conn. 917
    , 
    222 A.3d 103
     (2020).
    We will discuss additional facts and procedural history
    as necessary to address the petitioner’s claims.
    I
    The petitioner first claims that the Appellate Court
    incorrectly concluded that the procedural default
    defense applies to competency claims. He argues that,
    because an incompetent defendant cannot waive any
    rights,3 including fundamental rights, any valid waiver
    of a fundamental right must be made on the record.
    Specifically, he argues that (1) this court should follow
    the guidance of federal courts that have declined to
    apply procedural default to competency claims because
    the harm of prosecuting an incompetent defendant out-
    weighs the interests protected by the judge-made doc-
    trine of procedural default, and (2) even if procedural
    default is a forfeiture rule, and not a waiver rule, this
    court should reject its applicability to competency claims.
    In response, the respondent argues that the Appellate
    Court correctly (1) applied Connecticut’s habeas jurispru-
    dence, and followed the majority of federal and other
    state courts, in holding that procedural default applies
    to competency claims, (2) declined to follow the deci-
    sion of the United States Court of Appeals for the Sec-
    ond Circuit in Silverstein v. Henderson, 
    706 F.2d 361
    (2d Cir.), cert. denied, 
    464 U.S. 864
    , 
    104 S. Ct. 195
    , 
    78 L. Ed. 2d 171
     (1983), and other federal and state court
    decisions, because they improperly conflate waiver and
    procedural default, and (3) concluded that the interest
    in the finality of convictions outweighs the risk that a
    criminal defendant will be deprived of his right not to
    be prosecuted while incompetent. We agree with the
    respondent.
    It is well established that, although federal postcon-
    viction jurisprudence does not bind us, this court has
    adopted the procedural default standard articulated in
    Wainwright v. Sykes, 
    433 U.S. 72
    , 87, 
    97 S. Ct. 2497
    , 
    53 L. Ed. 2d 594
     (1977). See, e.g., Hinds v. Commissioner
    of Correction, 
    321 Conn. 56
    , 70–71, 
    136 A.3d 596
     (2016).
    ‘‘Under this standard, the petitioner must demonstrate
    good cause for his failure to raise a claim at trial or on
    direct appeal and actual prejudice resulting from the
    impropriety claimed in the habeas petition.’’ (Internal
    quotation marks omitted.) Id., 71. The cause and preju-
    dice standard ‘‘is designed to prevent full review of
    issues in habeas corpus proceedings that counsel did
    not raise at trial or on appeal for reasons of tactics,
    [inadvertence] or ignorance . . . .’’ (Internal quotation
    marks omitted.) Crawford v. Commissioner of Correc-
    tion, 
    294 Conn. 165
    , 191, 
    982 A.2d 620
     (2009). The proce-
    dural default doctrine is a prudential limitation on the
    right to raise constitutional claims in collateral proceed-
    ings that vindicates the interests of finality of judgments
    and uniformity. See, e.g., Hinds v. Commissioner of
    Correction, 
    supra,
     71–72; Crawford v. Commissioner
    of Correction, 
    supra,
     188–89.
    Raising the defense of procedural default in Connecti-
    cut proceeds as follows: The petitioner files a petition
    for a writ of habeas corpus under oath, stating the spe-
    cific acts on which each claim is based and the relief
    requested; whether he has, in prior petitions, challenged
    the same confinement; the dispositions taken in connec-
    tion with those petitions; and whether ‘‘the legal grounds
    [on] which the petition is based were previously asserted
    at the criminal trial, on direct appeal or in any previous
    petition.’’ Practice Book § 23-22 (3). The respondent
    is then required to file a return to the petition and,
    specifically, must ‘‘allege any facts in support of any
    claim of procedural default . . . .’’ Practice Book § 23-
    30 (b). The petitioner must then file a reply to ‘‘allege
    any facts and assert any cause and prejudice claimed
    to permit review of any issue despite any claimed proce-
    dural default. The reply shall not restate the claims of
    the petition.’’ Practice Book § 23-31 (c). The habeas
    court, sua sponte or on a motion by the respondent,
    may dismiss the petition for ‘‘any other legally sufficient
    ground . . . .’’ Practice Book § 23-29 (5).4 Alterna-
    tively, the habeas court may conduct a trial, an eviden-
    tiary hearing, or hear argument on a dispositive question
    of law. Practice Book § 23-40. The habeas court’s con-
    clusion that the petitioner procedurally defaulted his
    due process claims involves a question of law; our review
    is therefore plenary. See, e.g., Johnson v. Commis-
    sioner of Correction, 
    285 Conn. 556
    , 566, 
    941 A.2d 248
    (2008).
    Neither this court nor the United States Supreme
    Court has considered whether the defense of proce-
    dural default applies to due process competency claims.
    We note, however, that we do not write on a clean slate.
    Rather, the same interests in finality and uniformity
    that apply to other procedurally defaulted constitu-
    tional claims apply in the present case. See Hinds v.
    Commissioner of Correction, supra, 
    321 Conn. 71
    –72;
    Crawford v. Commissioner of Correction, supra, 
    294 Conn. 188
    . We conclude that these interests militate
    against carving out an exception to the defense of proce-
    dural default for competency claims.
    As to finality, procedural default encourages petition-
    ers to undertake ‘‘the opportunity to resolve the issue
    shortly after trial, while evidence is still available both
    to assess the defendant’s claim and to retry the defen-
    dant effectively if he prevails in his appeal. . . . This
    type of rule promotes not only the accuracy and effi-
    ciency of judicial decisions, but also the finality of those
    decisions, by forcing the defendant to litigate all of his
    claims together, as quickly after trial as the docket will
    allow, and while the attention of the appellate court is
    focused on his case.’’ (Internal quotation marks omit-
    ted.) Crawford v. Commissioner of Correction, supra,
    
    294 Conn. 189
    . Procedural default also discourages peti-
    tioners from sitting on claims for tactical and strategic
    reasons, and ensures that evidence that is crucial to
    petitioners’ claims is available for review. ‘‘Memories
    fade with the passage of time, exhibits are lost, and
    other evidence is less likely to be available.’’ Johnson
    v. Commissioner of Correction, 
    218 Conn. 403
    , 416, 
    589 A.2d 1214
     (1991). The greater lapse in time that occurs
    between conviction and a habeas court’s consideration
    of a petition, unlike the direct appellate process with
    its stricter time limits, has serious consequences on
    the availability of witnesses and evidence. 
    Id.
     Compare
    Practice Book § 63-1 (a) (direct appeal must be filed
    within twenty days of judgment), with General Statutes
    § 52-470 (c) (rebuttable presumption that habeas peti-
    tion was delayed without good cause if not filed within
    five years of conviction deemed to be final judgment
    after appellate review or expiration of time for seeking
    such review) and General Statutes § 52-470 (d) (rebutta-
    ble presumption that successive habeas petition was
    delayed without good cause if not filed within two years
    of final judgment on prior petition due to conclusion
    of appellate review or expiration of time for seeking
    such review).
    The petitioner argues that, because the state does
    not need to retry him if he succeeds on his competency
    claim, the finality interest is diminished, thereby militat-
    ing against the application of the procedural default
    rule in this context. We do not agree. In fact, if anything,
    the passage of time heightens the concern that constitu-
    tional claims regarding competency be made timely.
    Not only is there the potential for the loss of evidence
    concerning a petitioner’s incompetency at the time of
    his trial—in this case, fifteen years after it concluded—
    but, potentially, the petitioner’s condition might further
    deteriorate, improve, or otherwise materially change.
    Courts have commented on the difficulties posed by
    attempting ‘‘retrospectively [to] determin[e] an accused’s
    competence to stand trial.’’ Pate v. Robinson, 
    383 U.S. 375
    , 387, 
    86 S. Ct. 836
    , 
    15 L. Ed. 2d 815
     (1966); see also
    Gold v. Warden, 
    222 Conn. 312
    , 317–18, 
    610 A.2d 1153
    (1992). Although certain circumstances require a court
    to conduct nunc pro tunc, or retroactive, competency
    hearings, they are generally disfavored because of the
    ‘‘risk that the post hoc reconstruction of the defendant’s
    mental state will be unduly speculative and inherently
    unreliable.’’ State v. Burgos, 
    170 Conn. App. 501
    , 529,
    
    155 A.3d 246
    , cert. denied, 
    325 Conn. 907
    , 
    156 A.3d 538
     (2017). The passage of time hinders the ability of
    postconviction courts to make meaningful determina-
    tions regarding a petitioner’s competency at the time
    of trial. See, e.g., United States v. Arenburg, 
    605 F.3d 164
    , 171–72 (2d Cir. 2010) (remanding for nunc pro tunc
    competency determination if trial court determines
    meaningful hearing can be held); United States v. Auen,
    
    846 F.2d 872
    , 878 (2d Cir. 1988) (same). The trial court
    ‘‘is in a particularly advantageous position to observe
    a defendant’s conduct during a trial and has a unique
    opportunity to assess a defendant’s competency. A trial
    court’s opinion, therefore, of the competency of a defen-
    dant is highly significant.’’ (Internal quotation marks
    omitted.) State v. Connor, 
    292 Conn. 483
    , 523–24, 
    973 A.2d 627
     (2009). A petitioner’s failure to raise the issue
    of competency at trial or on direct appeal deprives the
    habeas court of the crucial perspective of the jurist
    presiding at the trial. Consistent with these policies,
    applying the procedural default defense to competency
    claims encourages the timely assertion of those claims
    when the trial court is in the best position to determine
    competency and to provide a timely remedy.
    As to uniformity, we have emphasized the importance
    of applying the cause and prejudice standard consis-
    tently to all procedural defaults, whether the default
    occurred at trial or on direct appeal. See, e.g., Crawford
    v. Commissioner of Correction, supra, 
    294 Conn. 182
    (‘‘[i]n setting out [the cause and prejudice] standard,
    the [United States] Supreme Court emphasized the
    importance of the uniform application of procedural
    default standards, regardless of the specific nature of
    the procedural default’’); see also Coleman v. Thomp-
    son, 
    501 U.S. 722
    , 747, 
    111 S. Ct. 2546
    , 
    115 L. Ed. 2d 640
     (1991) (explaining that United States Supreme
    Court cases since Wainwright ‘‘have been unanimous
    in applying the cause and prejudice standard’’); New-
    land v. Commissioner of Correction, 
    331 Conn. 546
    ,
    561, 
    206 A.3d 176
     (2019) (claim of complete denial of
    trial counsel was subject to procedural default, but prej-
    udice is assumed); Council v. Commissioner of Correc-
    tion, 
    286 Conn. 477
    , 489, 
    944 A.2d 340
     (2008) (challenge
    to validity of plea subject to procedural default when
    petitioner failed to file motion to withdraw guilty plea or
    to challenge validity of plea on direct appeal); Correia
    v. Rowland, 
    263 Conn. 453
    , 461–62, 
    820 A.2d 1009
     (2003)
    (failure to raise issue of due process violation at trial
    or on direct appeal for state’s failure to preserve evi-
    dence was procedurally defaulted); Cobham v. Com-
    missioner of Correction, 
    258 Conn. 30
    , 37–38, 
    779 A.2d 80
     (2001) (failure to challenge allegedly illegal sentence
    at trial or on direct appeal was subject to procedural
    default); Johnson v. Commissioner of Correction, supra,
    
    218 Conn. 409
     (failure to challenge jury array or to raise
    ineffective assistance of counsel claim at trial or on
    direct appeal was subject to procedural default).
    This court has recognized only two exceptions to the
    requirement that a petitioner’s claims are subject to the
    defense of procedural default: (1) claims pursuant to
    State v. Salamon, 
    287 Conn. 509
    , 
    949 A.2d 1092
     (2008),5
    and (2) like the United States Supreme Court, claims of
    actual innocence. We exempted Salamon claims from
    procedural default because we concluded that the final-
    ity interests6 were ‘‘insufficiently weighty’’ in those
    cases and, further, that the state would ‘‘effectively be
    in the same position even if the petitioner had raised
    a Salamon type challenge in his criminal proceedings.’’
    Hinds v. Commissioner of Correction, supra, 
    321 Conn. 76
    . Similarly, we have held that the ‘‘strong interest in
    the finality of judgments, and the state’s interest in
    retrying a defendant with reasonably fresh evidence,
    does not require the continued imprisonment of one
    who is actually innocent’’ and, therefore, have allowed
    petitioners to raise a substantial claim of actual inno-
    cence for the first time on collateral review. Sum-
    merville v. Warden, 
    229 Conn. 397
    , 422, 
    641 A.2d 1356
    (1994); see also Murray v. Carrier, 
    477 U.S. 478
    , 496,
    
    106 S. Ct. 2639
    , 
    91 L. Ed. 2d 397
     (1986). In acknowledging
    both exceptions, we have recognized that Salamon
    claims and claims of actual innocence are exceedingly
    rare. See, e.g., Hinds v. Commissioner of Correction,
    supra, 74–75 (‘‘[o]f the 1.5 percent of [D]epartment of
    [C]orrection inmates incarcerated for kidnapping or
    unlawful restraint, one can reasonably assume that only
    a small subset will fall within the ambit of Salamon’’);
    see also Schlup v. Delo, 
    513 U.S. 298
    , 321, 
    115 S. Ct. 851
    , 
    130 L. Ed. 2d 808
     (1995) (‘‘habeas . . . petitions
    that advance a substantial claim of actual innocence
    are extremely rare’’). Thus, the finality interests and,
    as we explain next, the distinct and limited basis for
    actual innocence claims, which previously persuaded
    this court to carve out exceptions to the defense of
    procedural default, are not present for competency
    claims. We see no other prevailing reason to exempt
    competency claims from our uniform application of
    procedural default.
    Citing Wainwright v. Sykes, 
    supra,
     
    433 U.S. 91
    , the
    petitioner also argues that procedural default should
    not apply to competency claims because the petitioner
    ‘‘ ‘will be the victim of a miscarriage of justice.’ ’’ Both
    the United States Supreme Court and this court, how-
    ever, have limited this exception to claims of actual
    innocence. See Schlup v. Delo, 
    supra,
     
    513 U.S. 321
    ; Sum-
    merville v. Warden, supra, 
    229 Conn. 422
    . A petitioner’s
    claim of incompetency at the time of trial is not the
    same as a claim of incompetency at the time of his
    crimes. The latter claim would address his culpability
    and, therefore, his ‘‘actual innocence.’’ Perkins v. Hall,
    
    288 Ga. 810
    , 826, 
    708 S.E.2d 335
     (2011), overruled in
    part on other grounds by State v. Lane, 
    308 Ga. 10
    , 
    838 S.E.2d 808
     (2020). Instead, the claim of incompetency
    at the time of trial is ‘‘a trial right—a [due process]
    based protection designed to ensure that he received a
    fair trial.’’ (Emphasis omitted.) 
    Id.
     The habeas petitioner
    ‘‘does not come before the [c]ourt as one who is inno-
    cent, but on the contrary as one who has been convicted
    by due process of law . . . .’’ (Internal quotation marks
    omitted.) Summerville v. Warden, supra, 423. Thus, the
    application of procedural default to claims addressing
    competency to stand trial would not result in the same
    ‘‘miscarriage of justice’’ that Wainwright contemplated.
    Nonetheless, the petitioner argues that we should
    follow the decisions of several federal courts, including
    the Second Circuit, and hold that substantive compe-
    tency claims7 cannot be procedurally defaulted. In Sil-
    verstein v. Henderson, supra, 
    706 F.2d 361
    , the Second
    Circuit declined to hold that a petitioner’s claim regard-
    ing competency to stand trial was subject to procedural
    default. See id., 366. The court in Silverstein applied
    the logic of Pate v. Robinson, 
    supra,
     
    383 U.S. 375
    , in
    which the United States Supreme Court held that a
    petitioner could not waive his right to a competency
    hearing at trial by failing to request one because ‘‘it is
    contradictory to argue that a defendant may be incom-
    petent, and yet knowingly or intelligently ‘waive’ his
    right to have the court determine his capacity to stand
    trial.’’ 
    Id., 384
    . The Second Circuit held that this ratio-
    nale also applied to a petitioner’s failure ‘‘to object or
    to take an appeal on the issue’’ on collateral review,
    resting its holding that procedural default does not
    apply to competency claims or Wainwright’s waiver
    rule. See Silverstein v. Henderson, supra, 367. Waiver,
    in this context, is ‘‘an intentional relinquishment or
    abandonment of a known right or privilege by the peti-
    tioner personally and depended on his considered
    choice.’’ (Internal quotation marks omitted.) Jackson
    v. Commissioner of Correction, 
    227 Conn. 124
    , 131, 
    629 A.2d 413
     (1993).
    As the respondent and the Appellate Court aptly
    noted, however, in the nearly forty years since Sil-
    verstein, the great weight of federal and Connecticut
    habeas jurisprudence has transitioned from a waiver
    standard to a forfeiture standard for procedural default.
    See Saunders v. Commissioner of Correction, supra,
    
    194 Conn. App. 488
    –93. We explained in Crawford v.
    Commissioner of Correction, supra, 
    294 Conn. 165
    , that
    our prior habeas jurisprudence, using the deliberate
    bypass standard for procedural defaults, ‘‘was predi-
    cated on an assumption about federal law that later
    was refuted by the federal adoption of cause and preju-
    dice for all procedural defaults . . . .’’ 
    Id., 188
    . We have
    defined forfeiture in the criminal context as ‘‘the failure
    to make the timely assertion of a right . . . .’’ (Internal
    quotation marks omitted.) Mozell v. Commissioner of
    Correction, 
    291 Conn. 62
    , 71, 
    967 A.2d 41
     (2009). Thus,
    our procedural default standard is more akin to forfei-
    ture, which addresses the petitioner’s timing in raising
    a constitutional claim and not the mental state driving
    his decision to waive a claim. Additionally, Silverstein
    does not discuss the finality or uniformity interests
    served by procedural default. We are persuaded that,
    given the more recent move away from a waiver stan-
    dard for procedural default, and the compelling finality
    and uniformity interests implicated, Silverstein is not
    helpful in resolving the contemporary question of
    whether to apply procedural default to competency
    claims.8
    In concluding that the Appellate Court correctly held
    that the petitioner’s claim is subject to procedural
    default, we recognize the predicament facing habeas
    petitioners who may have been incompetent at the time
    of trial and, because of that incompetency, failed to
    raise the issue at trial or on direct appeal. Because we
    conclude, however, that, if properly pleaded, incompe-
    tency is a legally cognizable ‘‘cause’’ that may survive
    a motion to dismiss; see part II A of this opinion; the
    potential harm of applying procedural default to compe-
    tency claims is mitigated.
    II
    The petitioner next challenges the Appellate Court’s
    conclusion that his pleadings failed to allege sufficient
    cause and prejudice to overcome a procedural default.
    As to the cause prong, he argues that incompetency
    can constitute cause.9 As to the prejudice prong, he
    argues that prejudice must be presumed because incom-
    petency to stand trial constitutes structural error. The
    respondent counters that the Appellate Court correctly
    held that the petitioner’s reply was deficient pursuant to
    Practice Book § 23-31 (c).10 As to cause, the respondent
    argues that the Appellate Court correctly held that the
    petitioner’s mental impairment is not an external imped-
    iment to his defense and, thus, cannot suffice to over-
    come the procedural default. The respondent also pos-
    its that, on collateral review, due process claims of
    incompetence to stand trial must be brought with an
    accompanying ineffective assistance of counsel claim.
    The respondent does not address the sufficiency of the
    petitioner’s allegation of prejudice. We address each
    prong in turn.
    A
    The United States Supreme Court has left open for
    resolution the precise definition of cause and prejudice
    for more than forty years; see Wainwright v. Sykes,
    
    supra,
     
    433 U.S. 87
    ; but has explained ‘‘that the existence
    of cause for a procedural default must ordinarily turn on
    whether the [petitioner] can show that some objective
    factor external to the defense impeded counsel’s efforts
    to comply with the [s]tate’s procedural rule.’’ (Emphasis
    added.) Murray v. Carrier, 
    supra,
     
    477 U.S. 488
    ; accord
    Johnson v. Commissioner of Correction, supra, 
    285 Conn. 568
    . ‘‘A factor is external to the defense if it
    ‘cannot fairly be attributed to’ the prisoner.’’ Davila v.
    Davis,      U.S.    , 
    137 S. Ct. 2058
    , 2065, 
    198 L. Ed. 2d 603
     (2017). Objective factors external to the defense
    include, but are not limited to, ‘‘a showing that the
    factual or legal basis for a claim was not reasonably
    available to counsel,’’ outside interference by officials
    that made compliance impracticable, and ineffective
    assistance of counsel that violates the sixth amend-
    ment. Murray v. Carrier, 
    supra, 488
    .
    Cause and prejudice replaced the ‘‘deliberate bypass’’
    standard in federal and state habeas jurisprudence as
    the standard courts apply in response to a procedural
    default. The deliberate bypass standard had assessed
    ‘‘whether the record affirmatively disclose[d] that the
    petitioner’s decision to waive his right to appeal was
    made voluntarily, knowingly and intelligently.’’ Valeri-
    ano v. Bronson, 
    209 Conn. 75
    , 79, 
    546 A.2d 1380
     (1988).
    The cause and prejudice standard, instead, ‘‘rests not
    only on the need to deter intentional defaults’’ but also
    on the judgment that the costs of habeas review are
    high when a trial default has occurred. Murray v. Car-
    rier, 
    supra,
     
    477 U.S. 487
    . A trial default ‘‘deprives the
    trial court of an opportunity to correct any error without
    retrial, detracts from the importance of the trial itself,
    gives state appellate courts no chance to review trial
    errors, and exacts an extra charge by undercutting the
    [s]tate’s ability to enforce its procedural rules.’’ (Inter-
    nal quotation marks omitted.) 
    Id.
     The United States
    Supreme Court has explained that these costs ‘‘do not
    disappear when the default stems from counsel’s igno-
    rance or inadvertence rather than from a deliberate
    decision, for whatever reason, to withhold a claim.’’ Id.;
    see also Wainwright v. Sykes, 
    supra,
     
    433 U.S. 87
    –88
    (noting that cause and prejudice standard is narrower
    than deliberate bypass standard).
    The cause and prejudice standard, therefore, is
    designed to default inadvertent forfeitures of constitu-
    tional claims, as well as intentional waivers. The cause
    and prejudice standard is also designed to excuse proce-
    dural defaults beyond a petitioner’s control. For a cause
    to be ‘‘internal,’’ the law presumes some level of partici-
    pation by the petitioner in his defense so that we hold
    him answerable for failing to raise a claim at trial or
    on direct appeal, whether it is active participation, such
    as intentional waivers, or passive participation, such
    as inadvertent forfeitures. Incompetency, on the other
    hand, has the effect of the petitioner’s being unable to
    participate in his defense. See General Statutes § 54-
    56d (a). The due process protection against trying an
    incompetent defendant finds support in the common-
    law ban on ‘‘trials in absentia; the mentally incompetent
    defendant, though physically present in the courtroom,
    is in reality afforded no opportunity to defend himself.’’
    (Internal quotation marks omitted). Drope v. Missouri,
    
    420 U.S. 162
    , 171, 
    95 S. Ct. 896
    , 
    43 L. Ed. 2d 103
     (1975).
    Indeed, we measure incompetence to stand trial by
    whether the defendant ‘‘is unable to understand the
    proceedings against him or her or to assist in his or
    her own defense.’’ General Statutes § 54-56d (a).
    Determining whether a cause is internal or external
    based on a petitioner’s ability to participate in his
    defense is similar to drawing the distinction between
    the kinds of attorney error that we do or do not impute
    to petitioners for purposes of satisfying the cause prong
    of the cause and prejudice standard. On the one hand,
    a petitioner is bound by counsel’s tactical decisions,
    whether counsel is flouting procedural rules or hedging
    against strategic risks. See Reed v. Ross, 
    468 U.S. 1
    ,
    13–14, 
    104 S. Ct. 2901
    , 
    82 L. Ed. 2d 1
     (1984). In those
    situations, excusing the procedural default ‘‘would be
    contrary to [well settled] principles of agency law.’’
    Coleman v. Thompson, 
    supra,
     
    501 U.S. 754
    , citing 1
    Restatement (Second), Agency § 242, p. 534 (1958)
    (master is subject to liability for harm caused by negli-
    gent conduct of servant within scope of employment).
    On the other hand, ‘‘if the procedural default is the
    result of ineffective assistance of counsel, the [s]ixth
    [a]mendment itself requires that responsibility for the
    default be imputed to the [s]tate. . . . In other words,
    it is not the gravity of the attorney’s error that matters,
    but that it constitutes a violation of [the] petitioner’s
    right to counsel, so that the error must be seen as an
    external factor, i.e., imputed to the [s]tate.’’ (Citation
    omitted; internal quotation marks omitted.) Coleman
    v. Thompson, 
    supra, 754
    .
    We decline to follow the Appellate Court’s analysis,
    and that of several federal courts of appeals, holding
    that mental incompetency is ‘‘internal’’ to the petitioner
    and therefore not recognizing incompetency as legally
    sufficient to satisfy the cause prong of the cause and
    prejudice standard. See Saunders v. Commissioner of
    Correction, supra, 
    194 Conn. App. 503
    –504. Four cir-
    cuits have concluded that incompetency is internal
    because ‘‘[s]omething that comes from a source within
    the petitioner is unlikely to qualify as an external imped-
    iment.’’ Harris v. McAdory, 
    334 F.3d 665
    , 669 (7th Cir.
    2003), cert. denied, 
    541 U.S. 992
    , 
    124 S. Ct. 2022
    , 
    158 L. Ed. 2d 499
     (2004); see also Gonzales v. Davis, 
    924 F.3d 236
    , 242–44 and 244 n.4 (5th Cir. 2019), cert. denied,
    U.S.     , 
    140 S. Ct. 1143
    , 
    206 L. Ed. 2d 199
     (2020);
    Johnson v. Wilson, 
    187 Fed. Appx. 455
    , 458 (6th Cir.
    2006), cert. denied, 
    549 U.S. 1218
    , 
    127 S. Ct. 1273
    , 
    167 L. Ed. 2d 96
     (2007); Hull v. Freeman, 
    991 F.2d 86
    , 91
    (3d Cir. 1993). We find the analysis of these courts
    flawed and, therefore, reject this conclusion. Specifi-
    cally, we do not read the case law to consider pertinent
    to a determination of external versus internal cause
    whether that cause comes from ‘‘within the petitioner’’
    (e.g., within his mind or body). Rather, ‘‘internal’’ is
    defined as ‘‘something fairly attributable to the peti-
    tioner,’’ and, as we have explained, whether cause is
    internal presumes a level of participation by the peti-
    tioner in his defense.11 The fact that our statutes impose
    a duty on defense counsel, the state, and the trial
    court—but not the defendant himself—to raise the issue
    of competency also informs us that incompetency is
    external to the petitioner. See General Statutes § 54-
    56d (c). And, unlike other causes of procedural default
    that courts have held are internal to a petitioner, such
    as illiteracy or limited education; see, e.g., Harris v.
    McAdory, 
    supra, 669
    ; only competence to stand trial is
    a constitutionally protected due process right.
    We instead agree with the United States Court of
    Appeals for the Eighth Circuit, which has recognized
    incompetency as legally sufficient to satisfy the cause
    prong of the cause and prejudice standard and to excuse
    procedural default. In doing so, the Eighth Circuit held
    that ‘‘there must be a conclusive showing that mental
    illness interfered with a petitioner’s ability to appreciate
    his or her position and [to] make rational decisions
    regarding his or her case at the time during which he
    or she should have pursued . . . relief.’’ Holt v. Bow-
    ersox, 
    191 F.3d 970
    , 974 (8th Cir. 1999); see also Schnei-
    der v. McDaniel, 
    674 F.3d 1144
    , 1154 (9th Cir.)
    (explaining that Ninth Circuit precedent does ‘‘not nec-
    essarily foreclose the possibility that a pro se petitioner
    might demonstrate cause in a situation where a mental
    condition rendered the petitioner completely unable
    to comply with a state’s procedures and he had no
    assistance’’), cert. denied, 
    568 U.S. 1001
    , 
    133 S. Ct. 579
    ,
    
    184 L. Ed. 2d 380
     (2012); Farabee v. Johnson, 
    129 Fed. Appx. 799
    , 802 (4th Cir. 2005) (assuming, without decid-
    ing, ‘‘that profound mental illness may constitute cause
    to excuse a procedural default in certain circum-
    stances’’ but determining that petitioner did not demon-
    strate that any mental illness actually caused his proce-
    dural defaults). Consistent with the standard the Eighth
    Circuit has articulated, if a petition has been sufficiently
    pleaded to survive a motion to dismiss, habeas courts
    must assess whether a petitioner’s incompetency satis-
    fies the cause prong of the cause and prejudice stan-
    dard.
    In the present case, the Appellate Court was ‘‘per-
    suaded that the risk of a truly incompetent person being
    convicted and sentenced without any requested exami-
    nation of, or other challenge to, his or her competency
    during the criminal trial proceedings or on direct appeal
    is so minimal that the systemic interests of finality,
    accuracy of judicial decisions, and conservation of judi-
    cial resources vastly outweighed such risk.’’ Saunders
    v. Commissioner of Correction, supra, 
    194 Conn. App. 493
    . This assumption is premised on attorneys—those
    appearing on behalf of the petitioner and the state, as
    well as the court itself—being duty bound to raise the
    issue if it appears that the defendant is not competent
    to stand trial. See General Statutes § 54-56d (c); see
    also Pate v. Robinson, 
    supra,
     
    383 U.S. 385
     (court must
    conduct competency hearing when evidence ‘‘raises a
    ‘bona fide doubt’ ’’ as to defendant’s competence to
    stand trial); State v. Skok, 
    318 Conn. 699
    , 722, 
    122 A.3d 608
     (2015) (‘‘[a] trial court has an independent obliga-
    tion to inquire, sua sponte, into a defendant’s compe-
    tency when there is sufficient evidence before the court
    to raise a reasonable doubt as to whether the defendant
    can understand the proceedings or assist in her
    defense’’). There is also the presumption that a defen-
    dant is competent to stand trial. See General Statutes
    § 54-56d (b). Given this presumption, and our confi-
    dence in our state bar to raise issues of competency,
    we agree with the Appellate Court that the risk of a
    truly incompetent person being convicted and sen-
    tenced without challenge is minimal—but not zero.12
    The cause and prejudice standard is meant to balance
    the need for keeping habeas relief available to those
    petitioners who warrant it against the societal costs of
    habeas relief, and is not meant to thwart the interest
    in preventing a miscarriage of justice. See Newland v.
    Commissioner of Correction, supra, 
    331 Conn. 559
    –60.
    We disagree with the respondent that due process
    competency claims must therefore be brought with an
    accompanying ineffective assistance of counsel claim.
    ‘‘In habeas corpus proceedings, courts often describe
    constitutional claims that are not tethered to a petition-
    er’s sixth amendment right to counsel as ‘freestand-
    ing.’ ’’ McCarthy v. Commissioner of Correction, 
    192 Conn. App. 797
    , 810 n.8, 
    218 A.3d 638
     (2019). Although
    ineffective assistance of counsel in violation of the sixth
    amendment is the most commonly asserted basis for
    cause to excuse procedural default; 7 W. LaFave et al.,
    Criminal Procedure (3d Ed. 2007) § 28.4 (d), p. 202;
    it is not the exclusive basis. In holding that a novel
    constitutional claim could give rise to cause and excuse
    a procedural default, the United States Supreme Court
    has explained that there is a ‘‘broad range of potential
    reasons for an attorney’s failure to comply with a proce-
    dural rule, and [a] virtually limitless array of contexts
    in which a procedural default can occur . . . .’’ Reed
    v. Ross, 
    supra,
     
    468 U.S. 13
    . ‘‘[T]he failure of counsel to
    raise a constitutional issue reasonably unknown to him
    is one situation in which the [cause] requirement is
    met.’’ Id., 14. The United States Supreme Court, there-
    fore, has recognized as sufficient to establish cause a
    scenario in which, as in the present case, an objective
    factor is external to the defense yet still tangential to
    the effective assistance of counsel. Given the lack of
    precedential support for the proposition that procedur-
    ally defaulted competency claims must be brought with
    an ineffective assistance of counsel claim, we do not
    preclude the petitioner from raising a freestanding com-
    petency claim.13
    B
    Although the petitioner alleged prejudice in his reply,
    stemming from his conviction, incarceration, and spe-
    cial parole, the habeas court concluded that his allega-
    tion did not suffice. On appeal, the petitioner argues
    only that he was not required to allege or prove preju-
    dice because prejudice is presumed for competency
    claims. See Newland v. Commissioner of Correction,
    supra, 
    331 Conn. 548
     (concluding that, ‘‘for purposes of
    procedural default, after the petitioner has established
    good cause for failing to raise his claim that he was
    completely deprived of his right to counsel [at his crimi-
    nal trial], prejudice is presumed’’). The petitioner pro-
    vides no further support as to this issue. The respondent
    argues that the petitioner’s reply was deficient because
    he failed to plead a legally sufficient cause to rebut the
    defense of procedural default.
    The habeas court concluded that the petition and
    reply were deficient because an allegation of incompe-
    tency is legally insufficient to establish cause and preju-
    dice. The Appellate Court agreed with the habeas court
    to the extent that an allegation of incompetency is not
    legally sufficient to establish cause but did not address
    the petitioner’s argument regarding prejudice. See
    Saunders v. Commissioner of Correction, supra, 
    194 Conn. App. 499
    , 503 n.20.
    With respect to the prejudice prong, a habeas peti-
    tioner must show ‘‘not merely that the errors at his trial
    created a possibility of prejudice, but that they worked
    to his actual and substantial disadvantage, infecting his
    entire trial with error of constitutional dimensions.’’
    (Emphasis in original.) United States v. Frady, 
    456 U.S. 152
    , 170, 
    102 S. Ct. 1584
    , 
    71 L. Ed. 2d 816
     (1982); accord
    Hinds v. Commissioner of Correction, supra, 
    321 Conn. 84
    . ‘‘In applying that standard, the [United States
    Supreme Court] indicated that the petitioner would
    have to demonstrate that, with the proper instruction,
    there was a ‘substantial likelihood’ that the jury would
    not have found the petitioner guilty of the crime of
    which he was convicted. . . . Substantial likelihood or
    reasonable probability does not require the petitioner
    to demonstrate that the jury more likely than not would
    have acquitted him had it properly been instructed. . . .
    ‘A reasonable probability is a probability sufficient to
    undermine confidence in the outcome.’ ’’ (Citations
    omitted.) Hinds v. Commissioner of Correction, supra,
    84–85; 7 W. LaFave, supra, § 28.4 (d), p. 207 (explaining
    that United States Supreme Court has clarified that,
    ‘‘in order to establish prejudice under [Wainwright], a
    petitioner must demonstrate that had the constitutional
    claim been raised in accordance with state rules, there
    is a ‘reasonable probability that the result of the trial
    would have been different’ ’’). The prejudice inquiry
    often overlaps or merges with the showing of harm
    required to prevail on the underlying constitutional
    claim of error. See Johnson v. Commissioner of Correc-
    tion, supra, 
    285 Conn. 570
    –71 (showing of prejudice
    necessary to succeed on ineffective assistance of coun-
    sel claim necessarily satisfies prejudice prong of proce-
    dural default); see also Carraway v. Commissioner of
    Correction, 
    317 Conn. 594
    , 600 n.6, 
    119 A.3d 1153
     (2015)
    (‘‘[i]n the context of a guilty plea . . . to succeed on
    the prejudice prong the petitioner must demonstrate
    that, but for counsel’s alleged ineffective performance,
    the petitioner would not have pleaded guilty and would
    have proceeded to trial’’ (internal quotation marks omit-
    ted)).14 In the context of a claimed due process violation
    for being tried and convicted while incompetent, to
    prove prejudice, the petitioner therefore must show
    that there is a reasonable probability that, had the issue
    been raised, the trial court would have found him
    incompetent and not restorable to competency.15
    We disagree with the habeas court that the petitioner
    failed to allege sufficient prejudice to survive a motion
    to dismiss. Because the habeas court dismissed the
    petition on a motion by the respondent, the petitioner
    was not allowed to make a conclusive showing that,
    had the trial court ordered a competency evaluation,
    he would have been found incompetent to stand trial
    and not restorable to competency. The petitioner’s reply
    to the respondent’s return states that he ‘‘is prejudiced
    because he stands convicted of sexual assault in the first
    degree and is currently serving [ten] years of special
    parole.’’ The petition further alleges that the petitioner
    ‘‘was not competent to be prosecuted and to stand trial’’
    and that, due to his severe cognitive limitations and
    significant physiological and mental health afflictions,
    it was impossible for him to (1) ‘‘have any legally compe-
    tent understanding of the criminal justice court system
    at the time of his arrest and subsequent trial,’’ (2) ‘‘under-
    stand the criminal justice legal proceedings engendered
    by and encompassed by his arrest and subsequent trial,’’
    and (3) ‘‘appreciate and to understand in a legally com-
    petent manner his pending prosecution and criminal
    trial, such that he could not effectively assist in his
    defense.’’ Reading the pleadings ‘‘broadly and realisti-
    cally, rather than narrowly and technically’’; (internal
    quotation marks omitted) Carpenter v. Commissioner
    of Correction, 
    274 Conn. 834
    , 842, 
    878 A.2d 1088
     (2005);
    we are satisfied that the petitioner has sufficiently
    alleged that, had the trial court had him evaluated, his
    severe cognitive limitations and significant physiologi-
    cal and mental health afflictions would have established
    that he was incompetent to stand trial, was not restor-
    able to competency and, therefore, would not have been
    tried and convicted. Thus, we conclude that the plead-
    ings satisfy Practice Book § 23-31 (c). See footnote 10
    of this opinion. On remand, the petitioner must produce
    evidence to support this claim and thereby successfully
    rebut the defense of procedural default.
    Accordingly, the case must be remanded to the habeas
    court to address whether the petitioner was incompe-
    tent at the time of his criminal trial or direct appeal,
    thereby satisfying the cause and prejudice exception to
    the doctrine of procedural default.
    The judgment of the Appellate Court is reversed and
    the case is remanded to that court with direction to
    reverse the habeas court’s judgment and to remand the
    case to the habeas court for further proceedings in
    accordance with this opinion.
    In this opinion the other justices concurred.
    1
    In his first habeas petition, the petitioner alleged that his trial counsel
    rendered ineffective assistance by failing to call additional alibi witnesses.
    Saunders v. Commissioner of Correction, supra, 
    194 Conn. App. 478
    . The
    habeas court denied the petition and denied certification to appeal. 
    Id.
     The
    petitioner appealed to the Appellate Court, which dismissed the appeal. See
    Saunders v. Commissioner of Correction, 
    143 Conn. App. 902
    , 
    67 A.3d 316
    ,
    cert. denied, 
    310 Conn. 917
    , 
    76 A.3d 632
     (2013).
    2
    The respondent also argued that, to the extent the petition raised an
    ineffective assistance of counsel claim, that claim had been raised and
    resolved in the prior habeas proceeding. Saunders v. Commissioner of
    Correction, supra, 
    194 Conn. App. 479
     n.5. ‘‘The modern trend, which is
    followed in Connecticut, is to construe pleadings broadly and realistically,
    rather than narrowly and technically. . . . [T]he [petition] must be read in
    its entirety in such a way as to give effect to the pleading with reference
    to the general theory upon which it proceeded, and do substantial justice
    between the parties. . . . As long as the pleadings provide sufficient notice
    of the facts claimed and the issues to be tried and do not surprise or prejudice
    the opposing party, we will not conclude that the [petition] is insufficient
    to allow recovery.’’ (Footnote omitted; internal quotation marks omitted.)
    Carpenter v. Commissioner of Correction, 
    274 Conn. 834
    , 842, 
    878 A.2d 1088
     (2005). Although the petition does allege that defense counsel failed
    to request a competency evaluation, the petitioner specifically disclaimed
    that he was raising an ineffective assistance of counsel claim. The habeas
    court agreed, concluding that a ‘‘fair and liberal reading of the . . . petition
    supports the conclusion that the petitioner is alleging only a due process
    violation, and that he is not alleging ineffective assistance of counsel in
    violation of the petitioner’s rights under the sixth amendment [to] the United
    States constitution. Nor is the petitioner alleging ineffective assistance of
    appellate counsel on direct appeal [or] ineffective assistance by prior habeas
    counsel.’’ The petitioner also disclaimed that he was raising an ineffective
    assistance of counsel claim on appeal to the Appellate Court; see Saunders
    v. Commissioner of Correction, supra, 483 n.12; and at oral argument before
    this court. The respondent does not press this issue before this court. Thus,
    consistent with these prior proceedings and the limited issues we have
    certified for appeal, we do not revisit this issue.
    3
    We express concern that, during the habeas proceedings, the petitioner’s
    counsel indicated that the petitioner’s mother was in the courtroom and
    represented that she is the petitioner’s ‘‘legal protector . . . I should say,
    legal guardian. And she has signed, a while ago, a release to me that she
    wanted—she agreed that I should pursue his habeas [case], Your Honor.’’
    When the respondent’s counsel expressed concern about whether there
    would be any effective waiver of attorney-client confidentiality because ‘‘I
    have trial counsel I would like to call as a witness, and there really is no
    ineffective assistance of counsel claim,’’ the petitioner’s counsel indicated
    that, if the respondent was considering calling the petitioner’s criminal trial
    counsel as a witness, ‘‘I have no objection to Attorney [Alan D.] McWhirter
    testifying about the trial.’’ (Emphasis added.) It is not clear from the record
    before us that habeas counsel could unilaterally waive the petitioner’s attor-
    ney-client privilege if habeas counsel had determined it was necessary to
    have someone other than the petitioner approve the filing of the petition
    on his behalf due to the petitioner’s alleged incompetency and inability to
    be restored to competence. Habeas counsel should consult rule 1.14 of the
    Rules of Professional Conduct on remand.
    4
    Practice Book § 23-29 provides that a habeas court may dismiss a petition
    if it determines that ‘‘(1) the court lacks jurisdiction; (2) the petition, or a
    count thereof, fails to state a claim upon which habeas corpus relief can
    be granted; (3) the petition presents the same ground as a prior petition
    previously denied and fails to state new facts or to proffer new evidence
    not reasonably available at the time of the prior petition; (4) the claims
    asserted in the petition are moot or premature; (5) any other legally sufficient
    ground for dismissal of the petition exists.’’
    5
    Salamon claims are habeas claims seeking to vacate a kidnapping
    conviction pursuant to this court’s decision in State v. Salamon, 
    supra,
     
    287 Conn. 509
    , in which we overruled our long-standing interpretation of our
    kidnapping statutes. See 
    id., 542
    ; see also Hinds v. Commissioner of Correc-
    tion, supra, 
    321 Conn. 68
    –69.
    6
    These finality interests included ‘‘(1) the fact that law enforcement relied
    on the old interpretation of the kidnapping statutes while trying the peti-
    tioner; (2) the fact that the retroactive application of Salamon has no deter-
    rent value or remedial purpose; (3) the fear that our courts will be flooded
    with habeas petitions from other inmates convicted under [General Statutes]
    § 53a-92 (a) (2) (A); (4) the difficulty of retrying such cases where significant
    time has elapsed since conviction; and [5] perhaps most [important] . . .
    the concern that victims will be retraumatized by again having to testify and
    endure another round of judicial proceedings.’’ (Internal quotation marks
    omitted.) Hinds v. Commissioner of Correction, supra, 
    321 Conn. 73
    .
    7
    ‘‘A procedural competency claim is based [on] a trial court’s alleged
    failure to hold a competency hearing, or an adequate competency hearing,
    [whereas] a substantive competency claim is founded on the allegation that
    an individual was tried and convicted while, in fact, incompetent.’’ (Internal
    quotation marks omitted.) Saunders v. Commissioner of Correction, supra,
    
    194 Conn. App. 489
     n.14, quoting Lay v. Royal, 
    860 F.3d 1307
    , 1314 (10th
    Cir. 2017), cert. denied,      U.S.     , 
    138 S. Ct. 1553
    , 
    200 L. Ed. 2d 752
     (2018).
    8
    The petitioner also contends that our decision in State v. Gore, 
    288 Conn. 770
    , 777–78, 
    955 A.2d 1
     (2008), should lead us to conclude that we have
    adopted a ‘‘nonforfeiture doctrine with respect to fundamental constitutional
    rights.’’ We are not persuaded. Gore is a waiver case, and, therefore, the
    petitioner’s argument falters on the same analytical defect in Silverstein.
    See State v. Gore, 
    supra,
     776–77 (‘‘[o]ur task, therefore, is to determine
    whether the totality of the record furnishes sufficient assurance of a constitu-
    tionally valid waiver of the right to a jury trial’’). We agree that an incompetent
    defendant cannot, at the time of trial, knowingly, intelligently, and voluntarily
    waive the right not to be tried while incompetent in violation of the wisdom
    of Pate v. Robinson, 
    supra,
     
    383 U.S. 384
    . However, our case law regarding
    procedural default is consistent with a forfeiture regime, not waiver. In fact,
    we previously have held that a petitioner can procedurally default the right
    to a jury trial, the constitutional claim advanced in Gore. See Duperry v.
    Solnit, 
    261 Conn. 309
    , 330–33, 
    803 A.2d 287
     (2002).
    9
    In particular, the petitioner argues that his allegation of incompetency
    sufficiently established cause because the trial court’s failure to conduct a
    competency hearing during his underlying criminal trial was external to the
    defense. Because we hold that the petitioner’s claim of incompetency in
    general is external to him, we do not address this specific argument.
    10
    The respondent argues that the petitioner’s reply was deficient because
    he failed to plead a legally sufficient cause to rebut the defense of procedural
    default. The respondent relies on Anderson v. Commissioner of Correction,
    
    114 Conn. App. 778
    , 788–89, 
    971 A.2d 766
    , cert. denied, 
    293 Conn. 915
    , 
    979 A.2d 488
     (2009), in which the Appellate Court held that the habeas court
    properly dismissed in part a habeas petition because the petitioner’s reply
    ‘‘fail[ed] to allege any facts or [to] assert any cause and resulting prejudice
    to permit review of his claims’’ to rebut the affirmative defense of procedural
    default. Id., 788. In the present case, the habeas court and the Appellate
    Court concluded that the petition and the reply were deficient because an
    allegation of incompetency was not legally sufficient to establish cause. See
    Saunders v. Commissioner of Correction, supra, 
    194 Conn. App. 498
    –99.
    Because we hold that incompetency may constitute legally sufficient cause,
    we find the respondent’s argument unavailing. Both the petitioner’s petition
    and his reply specifically allege that he suffers from ‘‘severe [i]ntellectual
    and [a]daptive disabilities’’ and ‘‘significant physiological and mental health
    afflictions’’ that prevented him from comprehending the nature of the legal
    proceedings against him and from assisting in his defense. Thus, the plead-
    ings satisfy Practice Book § 23-31 (c).
    11
    We also are unpersuaded that the same alleged incompetency that would
    have exempted the petitioner from standing trial in 2006 is also ‘‘fairly
    attributable’’ to the petitioner so that, if proven as alleged, it would not
    serve as cause to excuse procedural default. Such circuitous logic defies
    common sense and our constitutional, statutory, and jurisprudential protec-
    tions against convicting an incompetent defendant. See State v. Johnson,
    
    253 Conn. 1
    , 20, 
    751 A.2d 298
     (2000) (‘‘Connecticut jealously guards’’ right
    of accused persons who are not legally competent to stand trial to not
    be convicted); see also General Statutes § 54-56d (a) (providing that ‘‘[a]
    defendant shall not be tried, convicted or sentenced while the defendant is
    not competent’’); Drope v. Missouri, 
    supra,
     
    420 U.S. 171
    –72 (‘‘it suffices to
    note that the prohibition [on trying a mentally incompetent defendant] is
    fundamental to an adversary system of justice’’). To keep a petitioner incar-
    cerated because of a procedural bar, if the claim that the petitioner was
    incompetent to have stood trial is correct, would be repugnant to these ide-
    als.
    12
    We emphasize that we hold only that the petitioner’s allegations of
    incompetency suffice to survive a motion to dismiss. On remand, to excuse
    his procedural default, the petitioner must still satisfy (1) the cause require-
    ment of the cause and prejudice standard by establishing that he was incom-
    petent at the time of his underlying criminal trial or direct appeal, and that
    his incompetency interfered with his ability to appreciate his position and
    make rational decisions regarding his case at the time during which he
    should have pursued relief, and (2) the prejudice requirement by showing
    that there is a reasonable probability that, had the issue been raised, the trial
    court would have found him incompetent and not restorable to competency.
    13
    Indeed, there is the risk that the petitioner’s incompetency prevented
    him from relating his incompetency to his attorneys. Incompetence, in that
    instance, may have impeded ‘‘[defense] counsel’s efforts to comply with
    the [s]tate’s procedural rule’’ requiring that counsel request a competency
    examination and, therefore, constitutes an external cause to excuse proce-
    dural default. Murray v. Carrier, 
    supra,
     
    477 U.S. 488
    . A defendant represent-
    ing himself at trial may also have no avenue to vindicate his due process
    rights against being tried while incompetent if his incompetency caused his
    procedural default. These examples highlight why an ineffective assistance
    of counsel claim does not necessarily need to accompany a due process
    competency claim. See McCarthy v. Commissioner of Correction, supra,
    
    192 Conn. App. 811
     (determining that petitioner’s due process claim that
    his guilty plea was involuntary because of his misunderstanding of state’s
    evidence, while related to petitioner’s claim of ineffective assistance of
    counsel, is ‘‘a separate, freestanding due process claim subject to proce-
    dural default’’).
    14
    Other courts have held, in the context of counsel’s failure to raise the
    issue of competency, that a petitioner must show that ‘‘there is a reasonable
    probability that the trial court would have found [the petitioner] incompetent
    had the issue been raised.’’ Blakeney v. United States, 
    77 A.3d 328
    , 348 (D.C.
    2013), cert. denied, 
    574 U.S. 1013
    , 
    135 S. Ct. 689
    , 
    190 L. Ed. 2d 392
     (2014);
    see 
    id.,
     348 n.65 (citing cases). Similarly, our Appellate Court has concluded
    that a petitioner failed to show prejudice to excuse procedural default for
    counsel’s failure to request additional competency evaluations because the
    petitioner failed to present credible evidence that he was not competent
    throughout his criminal trial. See Andrades v. Commissioner of Correction,
    
    108 Conn. App. 509
    , 520, 
    948 A.2d 365
    , cert. denied, 
    289 Conn. 906
    , 
    957 A.2d 868
     (2008).
    15
    To excuse a defendant from standing trial, the trial court is required to
    find both that the defendant is incompetent and not restorable to compe-
    tency. See General Statutes § 54-56d (f) (‘‘[i]f the court finds that the defen-
    dant is not competent, the court shall also find whether there is a substantial
    probability that the defendant, if provided with a course of treatment, will
    regain competency within the maximum period of any placement order
    permitted under this section’’). Because the prejudice prong of the cause
    and prejudice standard requires the petitioner to show that the trial court
    would have found him incompetent had the issue been raised at trial or on
    direct appeal, this inquiry must necessarily include the additional showing
    that the petitioner was not restorable to competency at the time of trial.