CONF iture:
While it's understood that Alpha Prot and Alpha Floor are different (I've gone into considerable detail on this twice, which you haven't acknowledged), the fact is that one of the functions of Alpha Floor is to provide extra thrust to increase or maintain airspeed when a pilot is commanding nose-up pitch and bleeding off speed to the extent that the boundary of approach to stall will be crossed if the attitude and thrust settings are maintained.
Alpha Prot cannot command a change in attitude if the pilot is holding the stick back - it can maintain the attitude at the maximum safe level as the speed bleeds off, but unless the pilot lowers the nose eventually Alpha Floor will activate, increasing thrust which in turn increases airspeed, changes the current coefficient of lift and lowers the AoA.
Alpha Floor may not be designed as a stall-avoidance feature, but it is nevertheless an intentional side-effect when it is active.
Coefficient of Lift graphic from :
The Lift Coefficient
Generic Coefficient Of Lift vs. AoA graph from :
How Airplanes Fly: A Physical Description of Lift
NB : This is a generic illustration, intended to show only that a correlation exists between Coefficient of Lift and AoA - beyond that it is not pertinent to this specific case.
