The screenshot beneath hails from YouTube. The flight obviously commenced less than an hour ago, as the A380 just attained FL250. Then at 14:28 the relief captain (Robert Juelicher) leaves the cockpit. At 14:37, ATC clears the flight to climb to FL320.
I'm assuming that relief pilots too are required to have rested and slept well before flying.
So how can Juelicher be expected to sleep or rest 1 hour into the flight? If I slept well (9 hours), it's impossible for me to fall asleep for another 12 hours.
Or did the Pilot-in-Command (Juergens Raps shown in the screenshot) misspeak? Is Juelicher expected to merely fritter away time (e.g. read a book) until his shift, not necessarily to sleep?