Fact....How long had the engines been running when they quit due to fuel starvation?
Dave (or any Pilot) should have had that fact worked into the situation along with the possibly confusing indications.
Ensuring both Transfer Pumps were switched on should have been part of that analysis of the problem.
We shall never know with absolutely certainty what he did or why....but we can all see what he did not do.
That is not a slam on Dave personally....anyone of us could have been in his seat and very likely could have made the same mistakes.
That is why trying to work out the puzzle for what happened that night is so difficult.
A well trained and experienced pilot who was thought well of those who flew with him and knew him....winds up in a tragic event as this.....is troubling because it could happen to us....any of us.
CVR's are not that expensive....why do we not install them as standard equipment defeats me.