Why did Robert give up on trying to get Bonin to descend. What did he find out that satisfied him that Bonin could not descend? He made no effort to take control.
Why did Bonin reach for spoilers?
Did he really say "Eh, what are you doing?" That implies he assumed pilot error....then he stands in the middle, giving silent assent (as did Robert) that Bonin should continue to try to regain control.
The "sense" of CRM conveyed from the comments in the report is....bizarre.
A question about stick position? With full NU Trim, does the stick neutral point remain centered? If so and with full back stick, is the back limit (stop) sensed or displayed? Felt? How would a pilot trying to descend acclimate to a stick with Full NU bias? Does ND require more travel than when Trim ="0".? It would with full NU trim, no? Is authority a function of stick travel?