How can I change the level for all connected clients in a multiplayer game?

Hi, thanks for the in-depth answer.

I am currently doing all my game-logic inside of blueprints. Is it possible to do this seamless travel (or any travel at all) via blueprints at this moment (or anytime)?

I start my debug-session with two clients via the play-in-editor feature with Num. clients set to “2” and checked “Run Dedicated Server”.