Haven't figured out how to connect a normal Lightning wallet via NWC yet.
Discussion
Currently, Keychat only has one Cashu wallet. Later, we will add two more types of (including NWC). All mini apps can use the Cashu wallet to complete Lightning invoice payments.
If you’re just starting to use the Keychat wallet, you can first receive some Lightning payments (keep the amount small, less than 100 sats) or ecash tokens.
I highly recommend you check out this short introduction video about Keychat.
I have, thanks. But no pure Lightning with NWC => not much interesting to me right now.