Let me put my hat of computer guy :
On alternate 2B law, pilots have to fly the derivate of the pitch on longitudinal axis d(AoA(t))/dt , and Bank angle B(t) non derivated on the lateral axis ! So Bonin did "mayonaise".
Compare that to that situation : If some famous pilot asks me to design the control system so that when putting his stick mayonnaise in the oscilloscop, we can discover he "pitched" J.S.BACH Toccata et Fugue BWV 565 in minor D, and rolled Diango Rheinardt playing "les Yeux Noirs", Oh yes it would be possible ! But I would say him "NO".
But Airbus and their pilot and non pilot designers accepted that crazy myriad "alternate(s)" deal. So much fun !
