I know over 1000 pilots
. None have a flight sim in their house.
Tinordi, your small leak theory....totally unrealistic. Doesn't matter how small the leak is, when the altitude of the cabin gets over a specific altitude threshold, all the alerts would work as normal.
Now other possibilities, like not getting the O2 on fast enough and losing consciousness, or other types of system malfunctions are at least feasible. But whether it was a rapid decompression or a very slow one would make no difference.