Originally Posted by
Welsh Wingman
The PNF in the LHS, when the A/P disconnected, could well have been asleep until sometime between 1H 55 and 2H into the flight.
He'd just come back from what he called a "doze", why would he need to sleep again? Judging by the CVR excerpts, he spends the first few minutes being briefed by the PF, with several references to REC MAX (which the PF's inputs eventually cause them to exceed, but this is never noted), and makes what looks like preparations to get around of the worst of what the weather radar is presenting by suggesting a minor course change and reducing the display range of the PF's weather radar - thus increasing resolution of the immediate area, followed by preparing for a possible bumpy ride by moving from managed to selected speed, selected at 0.8 Mach, (which I think is what he means by "computed" and "manual").
Fundamentally I'd say he seems pretty plugged in and situationally aware.