I totally agree here. Im an AME with Max Licence and i would have to say. Im quite sure this wasnt an AOA sensor. The FCC thats active with MCAS as its function (both have this Function) would have been looking at the right vane on one flight and then the left vane on the next flight, however on the last 3 legs the fault was the same. And trust me on this one. May have been different indications bbut all pointed at the same fault. I suspect the FCC or ADIRU was at fault or something it aircraft installation that was inducing the 20 degree difference between the 2.