But “range” is more complicated than just measuring the distance. Each device will choose its parent based on a number of factors, including signal strength. But it doesn’t use distance because it doesn’t have any way of measuring distance. Signal strength is sort of a proxy for distance, but not exactly. You might have a close device with a strong signal but it might not have any child slots left to accept a new routing. So you can’t always predict what device will be selected as the parent.