@_Phoenix
t0 is actually at 23:19:20 UTC (2 secs prior to transcript start)
At t15 the Copilot was probably looking at PFD2 and made the correct call.
But then at t17 the Captain pleaded "Help me, help me", so its possible that after this time the Copilot turned his head towards the the Captain and both were looking at PFD1. At t24 the Copilot may have looked back at PFD2 and uttered "No".
@Out Of Trim
The autopilot cannot determine what's being displayed to the pilots. The AP only knows that there were conflicting servo commands. When the AP disconnected, it left the aircraft in a stable, straight and level attitude.