lermontov
Contributor
agree, Gas analysis will be a good place to start looking -some sort of medical mishap for both is less likely, one person getting into some sort of trouble and the second helping and dying too is possibleSpeculation is all that it will be at this stage, however your theory of a gas issue I would definitely have as a suspect, I also agree that the fact the dive objective wasn’t started is an indicator of something going wrong after only a few minutes in to the dive, (probably less than 5min)
Such a sad loss for the guys families and friends.