The one player will be in one scene and the other will be in a different scene, and they will exchange and share data

Hello!

I want to create a multiplayer game. The one player will be in one scene and the other will be in a different scene, and they will exchange and share data. The first scene has command buttons that will make changes to the second scene (e.g. pressing button 1 forces the avatar in the second scene to jump). The first scene runs on a mobile device and the second scene on a PC. How can I implement it? I have already tried RPC and is not working for two different scenes.