I think there's one glaring omission in the crew discussions on the CVR record as AF447 descended out of control.
At no time did any one person state, "I have control". I would have thought that would have been a critical statement, showing leadership and setting the command structure for the emergency, and stopping the confusion over who was actually in control.
The problem appears to be that no-one on that flight deck exercised any strong leadership and took full control, thereby relegating the others to supporting, advisory positions.
That one person should have been the Captain, of course. Despite just being woken and despite still trying to regain full faculties, he should have shown immediate strong leadership and actions.
He failed, and the other two crew members also failed in their duties, in like manner.