It is that way for OOB.
For plays in bounds, forward progress counts while and after you are in contact with the defense. If they throw you back and you begin running again, then you have reset your progress. This is why I think smuggler has a point about WHEN Elliot was touched down.
I have no idea how to read if Elliot just hut the turf while falling down on his own guys. Does forward progress count if there is no defensive contact?