<Snipped quote by Warwick>
I can’t give generalized advice, but my advice for here? Be proactive in the interaction. Bring your characters to other characters. Maintain a conversation. And give some back and forth. Put yourself in a position to learn about the characters yours is speaking to, and naturally the opposite will happen, in a fluid flow of conversation. My experience outside MR is minimal, but MR is all about the cross-player interaction, and not a lot takes off without it.
In building a rapport with fellow rpers, I imagine this is also true to a heavy degree in the rest of the guild too.