How would I, from the Player Controller, stop a matinee playing?

Hi, I am working on a networked game that starts off with a brief cutscene of a camera circling a city, which I am accomplishing through matinee. I would like to make it so that if one person hits a button on the controller, it will prompt the other players to hit a button too. When everyone has pressed the button, I would like it to stop the matinee and jump right into the game.

The Problem is the only way so far I have seen to stop a matinee is through the level blueprint.

Is there a way to access the level blueprint through the player controller so I can tell it to stop it through the controller?

Or if not would there be someway for my players to kick off this event, and once it happens to tell it to stop the matinee for each connected player?