Final answer:
The accused or the alleged offender may not serve as both VWAP personnel and trial counsel for the same sexual assault case.
Step-by-step explanation:
The personnel who may not serve as both Victim and Witness Assistance Program (VWAP) personnel and trial counsel for the same sexual assault case are the accused or the alleged offender. This is because the accused or alleged offender has the right to a defense attorney and cannot be compelled to be a witness against themselves, as stated in the Amendment V and VI of the Constitution. Therefore, they cannot also serve as VWAP personnel who provide support to the victim and witnesses.