I guess I'll wait for the final analysis of the CVR and the FDR (if the data can be recovered).
All I've heard is the FO was breathing 'normally' and ignored the CA's request to come in.
Questions:
-Was the breathing based on the boom mic input from the FO?
-Did the FO get up and lock the deadbolt after the CA left?
-What is the medical possibility someone's breathing could remain 'normal' under the duress and the inevitable impact even if intentional?
-If the deadbolt wasn't locked, is it still possible the FO had a medical condition occur where he slowly became unconscious and thought he was hypoxic, and rolled the ALT selector down before blacking out?
Apologies if this has been already covered.