Transition Level not loading

how can I load the transition level while i load into a different level? I’ve already set the transition level in the settings but the transition level doesn’t seem to load. It just shows a black screen while it loads the new level.

for context, the transition level has a script that spawns a widget which is the loading screen.

this is the node I use to load the transition level and the next level since the transition level loading should be built-in. at least that’s what I understood from Async Loading Screens and Transition Levels | Unreal Fest Europe 2019 | Unreal Engine - YouTube

If you want to have levels ‘superimposed’ like this, you need to use level streaming