They connect over the mesh network. That’s the whole concept. Every device will relay messages to every other device in range. If your rooftop router is the best route between your device and the target, that’s the way it’ll end up going.

Yeah, that’s kind of the idea. They used to have a profile specifically for that application, but it’s deprecated. Basically all nodes do what you’ve suggested.

Possibly. I’ve ordered a higher end cable. Waiting for the weather to clear before installing.

My mesh map.

I wish I knew enough Fallout lore to make a joke about this.