FGD135 said
The various protections offered by the flight control system require the computers and sensors to all be working normally.
That statement is incorrect.
There a
re quite a few levels of sensor degradation that have none to minor to significant effects on flight control protections.
"Stall Protections" aside, a Stall Warning was sounding for most of the event, which seems to have not been given the attention that it should have been.