Impossible to show widget in time for client when it loads a map

I think i understand what transition map are supposed to do now, thanks to you and the video you’ve shared but I can’t make it work.

I’ve looked at docs and even ask chat GPT (conversation link : https://chatgpt.com/share/683dbf24-9c6c-8013-85fd-0a2027267066) what i was missing to use the transition level but it never feels like it triggered (prints in the level blueprint were not showing).

I feel like it’s because seamless travel can’t be used the first time you load a map, but is this statement true for the first ever map or the first time for each map ?