I need it integrated with where I have my other contacts. For example in @YakiHonne @npub1d6yy...mzrq @Damus ... so I can start a chat with my follows. But as a fallback, WhiteNoise could take my npub to show me relevant follows to chat to but then I'd still not have their WhiteNoise npubs, so WhiteNoise npubs would need to be in our nostr profiles? Some way to chat @Max would be that he has his WhiteNoise npub in his public profile and my npub in WhiteNoise would discover that, so I could initiate a chat with him. At that point, my WN npub wouldn't be authenticated as Leo, so Max would not trust my chat much. He could ask me to either nostr-DM him from my other account to confirm my identity or to store my WN npub with my public profile.

With "white noise npub" do you mean the separate MLS keypackage, or a throwaway npub you created yo sign in?