My MAX FRM says "AOA Disagree Alert (amber) [shows a picture] Indicates the Captain's (left) and First Officer's (right) angle of attack values disagree by more than 10 degrees for more tha 10 continuous seconds." I guess the AOA can't lie, but the manuals can.
However, all of this is based upon an MCAS system that will never fly again...
I am not so sure. For starters, Boeing STILL has not submitted MAX 2.0 for approval. The descriptions of it that they did submit left me with some serious questions, like one activation only (until reset). The original MCAS was supposed to be one activation only (until reset). What is the reset condition? How much has it changed? And the biggest question is, do we trust Boeing to tell us the truth?