No because the play isn't dead until the play is dead. If Trill fumbles, that is another change of possession, but the play is still alive, if they score they get credit for the TD, if they get tackled on the .01 yard line the game is over because the play is.
The argument you guys are making is basically this, the QB didn't thrown an Interception because the LB that caught the ball fumbled it 25 yards later. In that scenario, during regulation, you are starting a new possession, hence 1st and 10, not 3rd and 50.
I been watching football for almost 40 years and played a few back in HS. Every single time the defense creates a turnover, gets possession, but then coughs it back up to the offense, the offense gets a new set of downs. I have never seen a team end up in long to go because of a double turnover scenario. That means it's a new possession.