Ok, so you can get rid of the other cast, after the delay.
The player overlaps, you press delay, and two seconds later, the next level should open.
Ah, it’s a soft reference. You have to load those manually. Best to do this with ‘open level’ for now, just to check it works.
Once that’s working, you can use the node ‘sync load asset’ to load your level from the variable, then you can call the ‘open level by reference’ you have there…