I don't want to be a pain or make this more complicated than it needs to be. I think Coen would say something -- he does NOT like Lithor and would want to give Athanar all the info he could, and isn't daunted by Athanar's anger.
I can post that he says something about it in my next post, and they can discuss it briefly. Or if you'd rather, you can edit in that Coen says that 'There is one other thing, my lord -- Lithor may have been involved.' or something along those lines, and have Athanar respond as you will. (I only suggest the latter in case you want to keep things moving in that way, not cause I want to put the effort onto you or anything!)
Completely up to you. I am also fine with not bothering -- maybe in the mess of things Coen simply forgot. Anything's possible at this point I think.
And I am sorry -- I've kinda botched this up. Anyway, whatever your answer, I will act then and stop asking questions and suggesting various possibilities...