Unless I have missed it, I don't think that it has been mentioned that to complete a successful autorotative landing following a tail rotor (fenestron) drive failure, it is necessary to shut down the engines in flight. There are other techniques if the emergency starts with enough height or speed to maintain or recover directional control.
This to me has indicators of a marginally successful recovery from TRD failure at low speed and low altitude, followed by catastrophic failure of the roof that they landed on.