There's obviously a lot more going on than just "tension". We see at the end of chapter 34 that Adolin is dealing with a lot of conflicting feelings towards his father. He's furious about what happened to his mother. He hates how his father has been acting towards him ever since he admitted to killing Sadeas. Adolin doesn't want to be around his father because of how Dalinar makes him feel, and because he's obviously still struggling with what he's learned. It doesn't appear that he's had very long to process all this Stuff about his father yet, and it's not easy to try and hash things out when you're processing horrible things the other person did. The two obviously needed space from one another to get a little more clarity, and yes, some big explosion of feelings hasn't happened yet. But there's so much more than just tension between the two. We don't get much on how Dalinar is feeling at all, but what Adolin's been going through is woven into his entire arc. It's subtle, but it's there!
