I was thrown by the part about the horn not going off "in the air".
Again, ideally, when you saw the clock start, you should have whistled play dead, and started over.
Since you didn't do that, give the ball back to the team in possession when the buzzer sounded, count all activity up to that time.
If neither team is in possession when the buzzer sounds, count a shot in flight if good, then go to the AP.
Do not credit the 3 if it was shot after the buzzer, the half-ending buzzer causes the ball to be dead even when it goes off prematurely.
You apparently have knowledge that 2.3 - 1.3 = 1.0 second accidently ran before A2 got the ball. That is the time you put back on the clock. Lag time is not a factor here.
Now, tell us, you made all this up didn't you?
