I haven’t tried that exact set up myself but in hyprland the default tiling would have your Elden Ring on one half and your friends the other half. Then if you opened up discord it would split one of the halves in half again. If you wanted to have discord instead floating and over top of the stream you could do that, or send it to the next “desktop” over if you don’t need to see it. You can customize each of the tiles however you like, border or no border, you can move them around…