Whether the instruction to not consider the specific length of sentence a testifying co-defendant faced absent cooperation violates a defendant's sixth amendment right to cross-examination and to due process?

QUESTIONS PRESENTED 1. Whether the instruction to not consider the specific length of sentence a testifying co-defendant faced absent cooperation violates a defendant’s sixth amendment right to cross-examination and to due process? 2. Was the rejection of the cumulative error doctrine in the Virgin Islands contrary to Chambers v. Mississippi, 410 U.S. 284 (1973) and its progeny, and the failure to find error in incomplete jury charges grounds warranting summary reversal?