I have not got he full information. How many flightcrew members in this flight? I know the missing time is the very early moring during flight. Only two men crew for such a long and mostly nigh flight? I mean that will be very tired for oly two man crew. Or two of three, like AF447, and one of them was on his/her rest during cruise phase? What I heard is 53 years old captain with a 27 years old young FO. Too deep rank?