[Jurassic Referee]

Originally Posted by Ref in PA

I am pretty sure I got this right, but want to know your opinion.

A1 has the ball on the wing about foul line extended. A2 is at the top of the key and breaks toward the basket, moving around a screen set by A3. The entry pass to A2 is high and A2 leaps high in the air and secures the ball. B4, seeing the play, sets up in the path of A2 around the second lane position (out from underneath the basket). A2 lands on one foot and continues toward the basket taking a step with the other foot (although not a hugh step). With the second step, A2 contacts B4, knocking B4 to the floor. This was a bang-bang play and B4 did not establish position until A2 was in the air.

Because A2 had control of the ball, I called a charging foul on A2.

You nailed it. Case book play 10.6.1SitA(b) is the exact play. The second step by A2 after landing is irrelevant to the call.