With over 10K hours on the 737 including the 8oo and Max, and some training in accident investigation, I'd like to offer a few observations. First off, I dont believe it is possible to reach the ground in two minutes without the throttles pushed up.
Amazing in 10k hours you managed to find throttles on the 737... Where are these people coming from that don't even know basic cockpit terminology yet claim to have vast experience on type. Most airliners will reach 3000-4000 fpm descent with no power with less than 10 deg nose down, put the thing into a 40 deg nose down flight path (which the radar plots indicate happened here ref post #52) with power (or not) and you will find that rate of descent gets pretty high. Agreed to achieve -40 deg net flight path the nose must have been lower than that again, unless bits had fallen off. Pretty sure in just about any aircraft you could push the nose down to 45 deg and it will keep accelerating past break up speeds unless you have dive brakes or a parachute. If breakup speed is past mach 1 then it will do that. Remembering that with these subsonic machines as the aircraft approaches mach 1 the tendency is for the aircraft to pitch down further, hence mach trimmers.