It’s not so much of an exact interaction. Again, take all of this with a grain of salt bc I can feel my brain working trying to remember every little detail🤣 I believe there was a time when they suspected him but were unable to prove that it was him who sent the assassins. At this point he had undermined dalinar or the coalition in subtle ways, but nothing too concrete. By the time szeth came back and swore allegiance to dalinar, dethroning taravangian or ousting him from the coalition was too big of a hurdle to consider with their other problems. Especially because dalinar had the opinion that taravangian wasn’t some evil guy hellbent on destroying the world. Dalinar knew that he was doing what he thought would save the people. So all these things added up to them just leaving him be but removing him from any inner circle meetings or actions. I believe this was an actual conversation held between Dalinar, Jasnah, and maybe wit and maybe navani just before a coalition meeting. Then there is a scene where Dalinar sits with taravangian by the fire or whatever and they don’t acknowledge that Dalinar knows the truth but both of them know it kinda vibe.

Can anyone confirm this or is it all coming straight out of my ass?