Confusion came from entering an unknown land, a regime of which there was no knowledge, least of all experience. The accident began when the autopilot stopped. Perhaps some several seconds earlier. The Shadow, as is his wont, has laid it out explicitly.
The only aircraft system that may have had a part to play in the Stall was the THS, and it is completely unknown if the crew could have recovered with the Trim Back at 3. I think they could have, but they should not have climbed at the outset, and that climb is not well understood.
I am sorry this has leaked out, after the apex of the climb, nothing of value is to be captured by reading their last few comments.
If under some circumstances an aircraft can STALL whilst carrying passengers, it needs to be trained, not ignored, at the altar of self serving "mastery" of the craft. We are all buffoons, some more culpable than others, but it is an industry abdication of responsibilty that this happened.