Lets move on to something slightly different then.
Heavy crew ops, augumented flight crew. Captain, Relief Captain, First officer.
Now, it's clear, the Captain can log all flight time as P1, even when in the bunk, as there is legally only 1 PIC
The F/O logs co-pilot P2 time.
What does the relief Captain log? Based on the assumption that during the flight, he occupies the left and right seat when others are taking rest.
Is it logged always as co-pilot, even when sitting on the left seat, when the official PIC is on rest. Or is it logged as PIC when on the left and co-pilot when on the right seat?
Lets start the debate