Hi,
Clandestino:
There was at least one other crew mistaking stall buffet for overmach:
Indeed there are similarities on this ferry flight with AF447 case. I commented this in an earlier post, IIRC on UAS and Pitot generating false (misleading) inputs to the crew.
Their (heater off) Pitot's "failure mechanism" generated false (increasing) speed misleading the crew
during the climb.
I will locate my post and will be back with a comment on what i see common between both cases.
Anyway in both cases the stall buffet probably played an important role in their thinking, i agree with you. A dangerous one (the role).
In AF447 what is impressive is how (and why) they failed to even understand (timely) they simply (after stall) were not flying. Just performing a "free fall" trajectory (at near terminal speed).
The role of the man machine interface "performed similarly" to the (much simpler) one of the 727: Not helpful.
Will think and compare HF aspects in both before continuing.