[just another ref]

Later on, the tape clearly shows the L giving the PC signal. As it turns out, the player from A that drove the lane would've fouled out on that play, and that same player makes the game-winning shot a few moments later.

But the tape also shows that the block was the correct call, so it would have been a shame had that player needlessly been charged with a foul.

Assignor calls both officials and asks first why there were 2 different calls, and second, why did you not report 2 fouls, like the rule states?

There were not two calls. L made the PC signal by mistake.