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GN: Index of nearest node - Ignore Self position

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I'm trying to build a hanging wires.

I have a bunch of planes.
I convert faces of these planes into points and then I want to connect closest points to each other with a curve line.

The issue is, that in some cases it makes second wire where it already exists.
As far as I understand the issues is in the Index of Nearest Node and in the way i sample indexies position.
I basically need to tell geometry nodes to ignore the plane, if there is already a wire connected to this plane, but so far have no idea how to make it.

Please help :(

UPD:
To make my question more clear to understand, I made this.There are 4 planes, dinstance between each plane is 10 meters. Now, when I try to create cables, between these planes, I get a double wire in one place, and missing wire in another. I basically need the 4th cable go where the blue line on the screenshot is.


enter image description here


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