A protocol? Isn't that a stretch? I thought NWC was NIP-47.
Hello Nostrians!
Check out the latest piece for Bitcoin Magazine Shinobi about Nostr Wallet Connect potential for sparking a Cambrian explosion of bitcoin apps #nwc
https://bitcoinmagazine.com/technical/nostr-wallet-connect-a-bitcoin-application-collaboration-layer
Some best quotes below 👇
"Standardized mechanism needs to exist for all of different tools to talk to each other. This would allow each application and Lightning wallet developer, to all simply integrate one single protocol that would enable their applications to communicate with each other."
"Nostr Wallet Connect is a protocol making the attempt at being a truly generalized mechanism for fulfilling this need."
"It's based on Nostr’s identity architecture where every event is signed by a cryptographic keypair. This allows an application to generate a Nostr keypair, and from that alone have a cryptographic authentication mechanism to use with an external Bitcoin wallet"
"All of this is coordinated over Nostr, allowing for a very redundant means of communication not dependent on a single centralized messaging mechanism to facilitate the network connection between an application and wallet software or infrastructure running on their home network."
"NWC is useful for far more than simply integrating Lightning into Nostr applications. The entire design philosophy of Nostr itself was centered around keeping it simple enough that the entire protocol could be easily implemented correctly by any developer with minimal time."
"Nostr is the perfect underlying protocol to facilitate that given its incredible simplicity and the redundancy of a large set of relays to utilize. NWC is the perfect example of that being a viable solution. "
Learn more at: https://nwc.dev/

Discussion
Can a nip be a protocol?
A protocol is just a collection of standards on how something operates. I don't believe every sub-standard of a protocol is it's own protocol. I guess a sub-standard could evolve into it's own protocol if it became bloated enough.
I think it precisely fulfils the definition 
This is unrelated, but I have a question about this PR. Can I send you a DM?
Sure
Lightning is a clusterfuck of APIs that developers have very little time to understand. NWC is an effort to hide all of that from regular application developers that have more to do than to worry about specifics of each lightning provider. That alone should be enough to name it a protocol.
Nwc is definitely a protocol