Originally Posted by
MurphyWasRight
True, except MCAS is enabled when AP is off, perhaps another overlooked failure mode/path?
Just wanted to highlight that pre MCAS concurrent activation of manual and AP channel was software interlocked as well.
Another educated guess would be, that not AP has priority over manual, but one direction has priority over the other because it's likely to be implemented by a reversion switch both channels are connected to. So from this scenario ANU would be the "default" direction and AND the "reversed" direction activated by either manual or AP channel being switched AND.