Team A scores a field goal. B1 picks up the ball and steps out of bounds at the end line to prepare for a throw-in. Before the throw-in is completed, A2 commits an intentional (or flagrant) foul on B3 near the end line.
B3 would shoot the two free throws for the intentional (or flagrant) foul with the lane cleared. Team B will then have a designated spot throw-in on the end line.