I have lots of questions, but suspect it's way too early to ask 99% of them.
As a carry over from the earlier thread discussions on all power lost etc.
I assume that if both engines go down then this aircraft immediately reverts to battery power for essentials.
Would these essentials include power for communication between the flight deck and the cabin crew of the state of emergency?
or: is it likely that the Flight crew priority would be totally devoted to a puckered checklist for achieving a runway landing?