Earlier Qn,
Diego doesn't have a radar, certainly no freqs listed.
I commented on this ages ago, but some form of unlawful interference combined with depressurization (did someone have a grenade that went off, were the individuals trying to gain access using a device?), jet stuck in heading mode, poodles on into Indian Ocean, Abdul and his mate switch off modes, jet left unfortunately without a trace.
Having flown recently in that part of the world, ( Indian Ocean) it's pretty bloody remote! Flying for a good 30 mins with absolutely no HF comms across a couple of boundaries (dream of cpdlc...)
As for regaining consciousness, not a chance if you were up at 300 for a few hours without oxy.
Unlikely though, I think that anything would have got through security.
Does VHF/hf acars connect to an arinc ground station direct or is it pushed along to other aircraft in the vicinity? I use hf data regularly, nowhere near as reliable as one would hope.