There was a fumble/no fumble play during the game that I thought was covered very strangely.
PSU runner is tackled & the ball eventually comes out. Alabama clearly recovers. The covering official (H?) held the forward progress spot and made no call. No whistle, no raised hand, no bean bag -- nothing.
I was under the impression that (in replay games) the default call was "fumble", so that play could continue and replay could return the ball to the offense if it was clear that the runner was down before the ball came loose.
Replay did overturn this, but it looked really unusual.