It was a try, QB hit ball thrown forward, lineman catches it and dives
For endzone but prior to ball crossing plane he is hit and fumbles, ball rolls into endzone and is recovered by team A. Ruling was a foul for illegal touching was declined because the 4th down fumble rule (in effect on the try) make the ball dead at the spot of the fumble which is at the half, roughly, therefore the try is unsuccessful, the crew got it right, good work on a tricky play