I know Season Unending is one of the most troublesome quests in the game, but I still want to know if there is a workaround of my problem. Right now I'm sided with the Imperials, and I'm up to the point where I have to return Balgruuf's Axe to him after showing it to Ulfric, in the Message to Whiterun quest. At the same time I have to talk to both Ulfric and Tullius in order for them to come up to High Hrothgar for a treaty, but both of them refuse to say anything on the treaty. Is there any way to work around this? Or will I have to complete the Civil War quests before doing Season Unending?
I'm playing on patch 1.4, so the newest update.