Is a Player whose foot is on the line established in the Frontcourt?

Basically - A1 has the ball in Team A's frontcourt. A1 passes to A2 who is crossing from the backcourt, into the frontcourt. At the moment A2 catches the ball, his foot is on line, half in the front court, half in the back court.

This would be a backcourt violation, right? A2 is not fully in the frontcourt, right?