The first touchdown seems almost normal apart from the rapid nose drop after maingear touchdown. Windshear perhaps?
May it have been so simple as an attempt to catch the rapidly dropping nose caused the aircraft to get airborne again after the nosewheel bounced, but not at flying speed or with speedbrakes now extended, causing the second fatal nose drop?
Power may even have been coming on for a go around but the rapidly dropping nose made the situation unrecoverable?
How quickly things can turn to ****....
