I have multiple isometric maps that overlap. They all exist on the same Z, because the layer you aren’t working with is disabled from view. Is it possible to link between two grid graphs that overlap? Layered grid graph seems to assume spatial Z differences and most of the other node link stuff seems to assume graphs that are physically separated by distance. I want logical links, not physical links.
What are you trying to accomplish exactly with logical links? I’d imagine moving units between the two, but that could be done with either setting their graph mask, or, as you said, node links. Let me know what you’re trying to accomplish and I’ll see what I can find.