Originally Posted by CONF iture
There is a little something of Perpignan here.
It has to be add to the complexity of the situation - Beside the known disparities of indicated airspeed, did it trigger a silent rejection of the ADR 1 anemometric values ?
How confused was the system
You should know it but you seems to be the one confused, or trying to confuse on purpose. One alpha probe doesn't change a glitch until a second one is drifting, which is obviously not the case. In Perpignan, it takes two fully blocked.
Even for stall alarm, the higher value of three is triggering the alarm. An under-reading probe is a sign of something (ice, probe issue) but not something that could "confuse" the system (when was it confused, by doing what?).