There was a conversation with Withers where he shares a bunch of back-story about some of the big bads. He’s speaking pretty plainly, but there was still a dialogue option that said “Stop speaking in riddles and speak plainly. Can’t you give me more information?”. I felt like I had already obtained what I needed from him, but clicked that option just to be sure I didn’t miss something. The game zoomed in on his face and he slowly and firmly stated “NO”. I cracked up in real life because it felt like the “speak plainly” option was there entirely to toy with the players, which is pretty funny.
2nd act, IIRC? It would be available after the Emerald Grove situation is sorted. It’s just a background interaction that happens in your camp between these two.