BktBallRef was right!! (Sorry, Nevada)

[BktBallRef]

"team control by A ended on the try, and there is no more Team A & B (offense/defense) until team control is reestablished"

Correct. There is no offense or defense. The rule equally applies to all 10 players on the field.

"The red part here is also true in the case play. I don't know what you mean by "entitled to the ball." When is one entitled to the ball?"

In the case play, a team is entitled to the ball because they have the throwin, therefore, they are Team A.

I'm just trying to help you see that in your play, no matter which team a player is on, he can't jump from his FC, gain player control of the ball and land in his BC. It's a BC violation.