Lonewolf, in the English version of the BEA note, the time it takes for the captain to return to the cockpit from his rest is less than a minute.
From 2 h 10 min 50, the PNF tried several times to call the Captain back.
At 2 h 11 min 42, the Captain came back into the cockpit
While we await the English version, the PNF presumably asking where is the captain is said at 2h 10 min 49.
2 h 10 min 49
PNF: (…) il est où euh ?
Uh, where is he?
The timing suggests three things:
1.) The PNF expected that the movements of the plane would have brought the captain back to the cockpit.
2.) The PNF had already called the captain but the BEA did not include that call in its sequence.
3.) The PNF thought he had called the captain, but had not.
We do not have a transcript of the phrasing used by the PNF to summon the captain back to the cockpit, but I don't think even resting pompiers would get to the pompe floor within a minute after the alarm sounds.