OK. Plausible enough theory, along with many others.
A couple of things are a little difficult to understand. F/O finds time to try and use his phone but makes no effort on VHF? No idea about 777 but every other modern aircraft I’ve flown has at least one box powered by an emergency bus.
No idea if this is true but anecdotally , I’ve always been told that smokers are more resilient to hypoxia, something about their systems being hardened to low O2 environments.
Cascading / multiple faults always give me pause - the chances of such occurrences are infinitesimal. Not to say impossible, but rather other simpler theories are more attractive.
Nevertheless, super interesting analysis by GBO. Thank you for sharing.
Indeed, locating the FDR and CVR of MH370 can’t come soon enough - there is much to learn. Although, one wonders if after 10 years of immersion they will yield any data.