(perhaps stoopid) question from frequent PAX.
If deliberate / accidental cut-off of all signalling/monitoring equipment occurs, would that same cause stop control of the pressurisation system ?
Thus, cut/off of electrical control occurs (which is instantaneous) followed by fairly gradual (1 to 2 minutes ??) of loss of cabin/cockpit pressure and oxygen, resulting in incapacity of whover was in the cockpit at the time.