I just turned this on now.

Seconds left in the qtr, A1 passes into the post & the ball is stolen by B1. As B1 breaks the midcourt line the shot clock goes off (obviously the operator messed up), B1 continues & makes the layup as the buzzer sounds to end the qtr.

Coach A claims the inadvertent shot clock caused his defenders to let up allowing B1 to score. The officials put 1.3 seconds back on the clock.

Is this correct under NBA?

That's a freaky play. What if that happened in the Finals Game 7?

I don't think it's right, but I can't find a play in the casebook, or a direct reference in the rulebook. Just as in HS and NCAA, the shot clock horn does not cause play to stop. I'm not positive, tho.

Just by memory watching other NBA games, I have seen airballs or steals or the defense gets the ball somehow as the shot clock is winding down. The defense has the ball for a second or two and the shot clock goes off. I don't ever remember play being stopped though.....

Old FIBA mechanic when the shot clock went off in error was to immediately whistle and award the ball to the team in control or go to a jump ball with no team control.

Now if the shot goes up, misses the rim, defensive team has control and the play moves forward, then it's a "play on" situation.