Might be going crazy, but wasn't there a way to actually speak to the Lost Naga at some point? It's been a while since I've played.
You need to be small enough to fuck his slit
How to press the naga's cock on character slit?
See, I swear there was something you could do that would ultimately have him talk to you and acknowledge your symbiosis. Weird.
I've never run into actual conversation. I believe he has some lines for if you've lost and stolen size from you, but I think that's about it.
