Surely some sense of how unstable the airplane was going to get must have entered the PNF's mind.
Demonstrated by the PNF's desire to get the Captain back, and yet apparently too timid to be assertive and take control.
The BEA's HF group must have reviewed the missing part of the CVR we are discussing and considered the relevance of the exchange, or lack of, and could draw nothing of significance from it. I am left wondering if others would.
No doubt it will be "picked over" further down the track.
This is very hard to understand. He knew the PF was out of control but elected to call the captain back instead of assuming control. When the captain got back to the cockpit it was too late.