When do we not reverse the AP arrow?

[La Rikardo]

We know that the AP arrow is reversed when an AP throw-in ends. So what are some possible scenarios where an AP throw-in doesn't end and so we don't reverse the AP arrow?

The most obvious situation is when a foul occurs during the throw-in. Certainly a smart coach could leverage this to his advantage. A held ball occurs with 0.9 seconds left in a period. Team A, entitled to the ensuing AP throw-in, commits a TC foul during the throw-in. Arrow stays with A, and they get the AP throw-in to start the next period, which will certainly be more valuable than the AP throw-in with fractions of a second left.

Another situation would be a violation by B during the throw-in. Something straight-forward like swinging elbows by B during the throw-in isn't hard to figure out. But what about a boundary-plane violation and subsequent warning for delay? Certainly this would terminate (but not end) the AP throw-in and award a new designated-spot throw-in to A, leaving the arrow with A.

What if B kicks the passed ball before the AP throw-in has previously ended? This one is confusing to me. The throw-in ends when the passed ball touches or is legally touched by another player inbounds. Why are "touches" and "legally touched by" both listed? My only thought is that there is supposed to be a distinction between the ball touching a player and a player touching the ball. In the case of B kicking the passed ball, the ball is touched by another player inbounds, but the touching was not legal. Did the AP throw-in end? Strictly speaking, the passed ball touched a player inbounds so you could certainly say that it has, but that would make "legally touched by" redundant. I think the intent here is that A keep the arrow and get a new designated-spot throw-in.

Can anyone provide some clarity here? Are there any other situations where the arrow would not reverse following the start of an AP throw-in? Any stories regarding situations like this?