Difference of understanding with P...

[Adam]

Originally Posted by Indianaref

How do you know it was a dad in the stands?

I don't, and I don't know it was the coach. If I don't "know" it was the coach, I'm not making him burn the TO.
It's just like blowing your whistle for a phantom OOB call and knowing immediately that you kicked it. Go with the IW and get the ball in play quickly (unless one of the coaches now wants to use a TO.)

The case play is clearly referring to team B (typically the team without the ball in the case book) requesting a TO and the whistle blowing for that. Here, you do not know who said it. Play on.