Let's see, the ball is live when it leaves the Rs hands & holding a player who isn't trying for a basket during live action is a common foul.

Although I'm sure a case can be made for an intentional foul if the hold negates an obvious advantageous position for B1.

Guess one would have to be there to determine...

I'm more concerned about what to do next in both situations.

Common foul - award the ball to Team B OOB closest to the spot of the foul & point the arrow to Team A when it's at the throwers disposal?

Intentional foul - B1 shoots 2 FTs & the ball to Team B OOB closest to the spot of the foul & point the arrow to Team A when it's at the FTers disposal? or at throwers disposal?