Ncaa Blarge?

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Did any one on this net happen to watch the Montana-Wyoming game and see the Blarge call? 30 seconds to go, Montana down by 3 defending. From the radio play by play it was an apparent double foul with trail calling an offensive foul on the driving Wyoming player and lead calling a block. Wyoming ball at POI. Turned out to not be a game decider as Wyoming turned it over on next possession but it sure was a play you don't hear/see too often.

In college do the officials immediately go to what they see or do they delay their call waiting for the official for whom the play is coming toward to make his call?