Whether the termination of cross-examination of a cooperating-witness-with-incentives-to-lie prior to being able to impeach the witness violated the confrontation-clause

QUESTION PRESENTED Whether the termination of cross-examination of a cooperating*with incentives to lie prior to being able to impeach the witness violated the confrontation clause? If so, can reasonable jurists debate the issues? . Whether allowing a documented schizophrenia defendant to represent himself at trial, and facing a life sentence, violated due process of law by not having a competency hearing in light of Indiana v. Edwards, 171 L. Ed. 2d 345 U.S. 164 (2008)? If so, can reasonable jurists debate this issue?