FJJP
Your assumption is irrelevant. The design of the Concorde aeroplane was such that this assumption would only be valid following a total loss of airframe integrity (eg. a bomb, mid-air collision etc.), hence making conciousness irrelevant. The pressurisation system was remarkable, and without equal. For example, two cabin windows could be blown out and cabin pressure maintained at 15,000' at FL600 indefinately.
No failure mode required in the certification of conventional aircraft would result in loss of conciousness of the flight crew of Concorde during the flight manual recovery procedure.
It was not a Vulcan.
Or a Canberra.
It was the most capable jet transport ever built.
Best,
NW1