A) Can't answer this without knowing where and when A-2 lands. If he lands out of bounds (and never subsequently returns) or lands after the team mate has possessed the ball, this is a legal play, as A-2 never returned inbounds and he was not out of bounds when he legally batted the ball.
B) This is easier, batting a kick forward is a foul. Basic spot, so rekick from the A-25.