Punch - Unsportsmanlike conduct? Technical?

[CuriousFan]

Sorry, I'm new and not used to the A/B's and should have read it better.

A1 gets the pass, B1 defends closely and as A1 tries to pass, B1 fouls attempting to make the steal. Immediately after **A1 passes the ball, A1 turns and punches B1** in the stomach (grazed).

If I understand right, the same result -- person who punched is called for a technical, other team gets two foul shots and the ball.

B1 fouled out on the play (5th). A1 was awarded a one and one. A won the game by two points.

Both referee's responded as if to break up a fight by running at the two players. On the video, the punch was clear and based on where the two referee's were standing (one under the basked with a clear view, one behind and to near mid-court with a clear view, A1 and B1 at the top of the key) and how they moved it is clear they saw the punch. There was no reason to move based on the foul before the punch.

A1 did not land a good punch because he had to strech to land it, but B1 confirmed that it landed and as evidenced on the video.