The issue was opening a channel between two Electrum wallets (e.g. "Electrum wallet 1" as your Electrum wallet, "Electrum wallet 2" as remote node).
Means that "Electrum wallet 1" should be able to open a channel by using "Electrum wallet 2" 's nodeid (and IP).
Ok than i missunderstood this, u mean the direct connection between 2 wallets with the same ln node or.
I tried this out with an same endurance Node on both (local/remote) sides.
Works flawless
but may u mean anything else
best regards