[JRutledge]

Welcome to the forum first of all.

The ball can only be at the disposal of the team that is entitled to do a throw-in. So when the ball is at the disposal of that team (the team that did not score) then only the team that is making the throw-in can request a timeout. Before then the ball is dead and anyone an request a timeout. And when the ball is at the disposal of the throw-in team, the ball is live. That time does not mean they have to even have the ball, but have had the opportunity to pick up the ball and begin a throw in. Or when the official starts their count which is supposed to start simultaneously with when the ball is at the disposal of the throw-in team.

Peace