Zigbee2mqtt: getting rid of your proprietary Zigbee bridges (Xiaomi, Hue, TRADFRI)

You need to re-pair with the router closer than the co-ordinator.
The way the network works is that when you put the router into pairing mode (and/or enable a new item to connect via the co-ordinator), they both are ready to accept a new entry or re-connect if already paired.
When the end device sends out its payload to connect, which ever receives the payload first and responds gets the connection (i.e. closest).
Best to do the pairing right next to each other or with the devices in their actual location.
You could have dynamic repairing, but it means that anyone ‘could’ walkpast with a router/co-ordinator with a boosted signal and ‘steal’ your endpoints, so it’s not really used that widely as its not all that safe.
Mind you, you can sniff the transmitted packets anyway so the point is quite moot.

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