Milan on Nostr: I would like to open (my first) unannounced (private only) channel between my ...

I would like to open (my first) unannounced (private only) channel between my well-working full node (#RaspberryPi4, #Umbrel, #Lightning Node, all newest versions) and at least one of my well-working Lightning wallets (#Zeus, #Breez, #Phoenix, #BlueWallet, #Muun, desktop #Zap, browser extension #Alby). Nothing more.
I've followed and read all the available resources I could find. The answer to my 'what and how to set it up' question is still somewhere out there.
There should be some "routing hints" as a set of "pathfinding helpers", I know there. But where?
Any help please?
Thank you 🙌