Is it possible to read a trains schedule?

[Afroman]

I have a bunch of warehouses(BA) full of extra stuff. a lot of extra stuff.
My idea was to let train come pick a specific resource and deliver it with the help of LTN.
My problem is that I only want the inserters to load the specific resource that the train came for but I dont see how to get that information so that I can pass it to my filter inserters.

So the question: can I somehow read the trains schedule so that I can get a signal of what the train wants?

[Afroman]

Apparently it can be read directly from the combinator that comes with the train stop. easier that expected .