Quote Originally Posted by Iscah View Post
Hythlodaeus is Chief of the Bureau of the Architect – maybe not ranking as high as the Convocation, but certainly not a nobody.

As for Venat and her likely age... well, she's old enough to have retired and kept on going, so despite having no apparent age and not seeming older than the others, logically she's more towards the "cool old lady" archetype.

Also it's possible that Venat still does some work with the Convocation as an advisor even if she's not an actual member any more.
I'll point out further that Hythlodaeus was up for Hades's seat on the Convocation first, and was likely visited by/suggested by its members to fill the Emet-selch position and Venat could have come into contact with him that way, if she didn't already know him.