HazelNuts39,
I got that. The aircraft will enter alpha floor only if you give a further pitch up input AND you are below M.053 on the A330, which is gonna happen at somepoint during the single engine descent at alpha prot (in the proposed scenario).
ON THE A320, if I shut down an engine during cruise at FL390, don't take any actions, wait for the aircraft to reduce to alpha prot, and give a further pitch up input to the sidestick, will alpha floor activate at FL390?