Confused? You bet I am!

[PAULK1]

In this situation you had a fight by any definition B did something that caused A to retaliate.If there was more lag time between the shove and the punch it may have been prevented by a strong whistle and stepping in quickly this wasn't the case here. rule of thumb for fights nothing else happens until the fight is stopped then move both teams to their benches. Then get together with the other officals
go over what will be reported, who will be ejected, how many free throws...etc. report to the table inform the coaches then move the players back onto the floor.
this procedure gives time for the coaches to refocus their players and helps us get what we are going to do next correct. And when the players get back on the court you have all the officials focused on them preventing any other
acts.