Coaches Question

[TrojanHorse]

Had this happen over the weekend, neutral court, inexperienced person running the clock.

1st half, throw in under the basket, Trail was in front of our bench. Both teams were lining up, I sent a substitute to the table. There was no buzzer, so i said sub as i would think most coaches do. The official looks and blows his whistle. In that time, the other official game the ball to the player to be thrown in. After the kids stop he says, "Play on, I already gave him the ball" and well we proceed to give up an easy shot. Just wondering if you all think the play should have been stopped and restarted because of the whistle. Thanks