I think BEA is to be commended for their perspective, here....
"It should be noted that, during this forty-six second period between the autopilot disconnection and the STALL 2 warning, the C-chord warning sounded for a total duration of thirty-four seconds, thirty-one seconds of which as a continuous alert, and the STALL warning sounded for two seconds. The C-chord alert therefore saturated the aural environment within the cockpit. It was not cancelled by the crew. This aural environment certainly played a role in altering the crew’s response to the situation."
The part that can be overlooked in an emergency situation is that the Stall WARN is not STALL, not YET..... There can be an accomodation made, unconsciously, that allows for the Horn to be forgotten, in favor of a few seconds of "What's That?" addressed to other stimuli.....