We touched on the oft displayed denial in this thread, oh about 100 pages ago now (hard to keep up!). Lets at least try to keep pace with the investigation if possible
If you really must persist with mechanical/tech incidents/scenarios occurring at precisely the moment of ATC handover & during what is statistically the safest phase of flight, against the direction of the professional investigation it must be said, then you first have to reconcile one of the few knowns:
A left turn was entered into the FMS & reported by ACARS
before comms went offline & before someone in the cockpit communicated with ATC for the last time [without alerting ATC of any unfolding drama].
Please do try to keep up