I saw Rutgers do this once against Syracuse. They were 30+ Dogs and losing by a 50-3 type score. But the Total was in play, around 57. Rutgers went for it with 3 minutes left on 4th and forever inside their own 5, and failed of course. But although there was still more than 2:30 left Syracuse took 4 knees and gave the ball back to Rutgers with 30 seconds left. One handoff later it was UNDER.