Hello !
I found out by accident that it is possible to have items teleporting from "depot" to "requester".
I made a picture to explain how to reproduce :
https://ibb.co/YQMmpt6
1) place a concrete wall on the map
2) place a requester depot so that the tile with "caution" is under the wall
3) remove the wall, notice no "road" under the "caution" tile, place a gate instead
4) now if a request is made on this chest once it's connected to a road network, items will be teleported to the requester chest. ( do not rebuild the road under the gate, just do as if there was one).
No error no crash. Just unexpected feature :)