OP - may I ask where in the chain order was Leaz?
I honestly almost never run into that issue anymore - but my avatar tends to be at the top of the chain. I think the only times I had wrong person engaged was when characters where unchained. I suspect that the game might treat the leader of a chain as a avatar, and talk to the nearest "leader" if character are sperate or grouped into smaller chains.
That said I did no testing and my I pression might be completely wrong. That said it's been couple patches since I run into the issue.