@Klonan,
As per the reply on Oct 28, the second train is being scheduled to the requester station before the first train completes its first stop at the provider station. The "is full" interrupt logic always checks the trains "on the way" and there's no way to have it check "trains with this stop ...

I too want this feature. How do we elevate this?
Although I think it would be faster/easier to implement just being able to have train stops output that value on the circuit network. Like it works now with "Trains with this stop - C"

TL;DR
Be able to read "Trains with this stop" into the circuit network with e.g. variable "O", The same way "Trains on the way" already works with variable "C"

What?
"Trains on the way" is already tracked separately from "Trains with this stop"
"Trains on the way" counts only trains traveling ...

@Cylarc , I seem to have developed the same interrupt schedule setup as you posted on Wednesday, It's so close to working with multiple simultaneous requesters/providers/materials but I have the same problems about scheduling several trains at once (race conditions). I tried the solution proposed by ...