Zzzzzzz…..
An interesting case.
after a long boring leg over the big blue ocean, can’t really blame the crew for nodding off, especially if one of the crew was scheduled for a bit of “rest in chair” it doesn’t take too much for the other to be drawn into similar state.
thankfully as the A/P reached it’s end of programming and the “boop boop boop” began booping - someone woke up.
It’s a fine example as to why descent still needs to be dialled in and actively commanded and activated - surprised ATC let the aircraft get so far (overflying the intended destination field) without further investigation, how far would it have gone? fuel starvation? Engine flame out?
Obviously nobody knows what the glide distance is on a two engine out 787 from FL370 but I expect there are plenty of places this plane could of nailed in to - in adjoining countries and possible population areas……