More info:
https://github.com/xane256/LTN-Logistic-Provider/tree/main
CRITICAL LTN Settings
> Providers Output Existing Cargo = FALSE
Items held by inserters = junk. This tells train to only load items from its schedule.
Recommended LTN Settings
> Stop timeout = 0
Optional but stop has its own timeout. Trains are forced out after 60 seconds inactivity w circuits
> "Schedule circuit conditions" = TRUE
Recommended for train control BUT ALL LTN stops MUST have wire connections eg power pole / lamp