Something does not fit - in this case the autopilot did not disengage and the auto throttles did retard???!!
It does fit. It don't think it was a dual AP approach.
AP B was in use. So no disconnect.
AT get's it signal from the left RA.
Captain FD's disappear and probably a RA flag. This might have distracted him.
We don't know everything, but we can say one thing. They forgot to fly the plain.
I hope the board will also focus on why the recovery failed after the stickshaker. A lot to learn there. As stated before in a previous post. It's not easy, but with basic flying skills and the knowledge that it is difficult I am quite sure it is possible.
Rgds
emjanssen