AF447 had two working aoa sensors that never disagreed. It didn’t have an aoa indicator in the cockpit though. You can infer what the aoa is by the vertical airspeed and engine output though. The inputs from left and right stick canceled each other and it power on stalled out of the sky landing belly first. This was pilot error because they had unreliable airspeed indication due to pitot tube icing.

Airspeed is a critical system while aoa is not. (Unless aoa is tied to mcas like in the max jets)