Board Thread:Questions and Answers/@comment-94.211.184.81-20160323165634/@comment-26486243-20160324050049

At this point I don't really see any info elsewhere on any other suspected quests either, so if you do find out eventually which quest was the gate, you may be the first to find out. Unfortunately I can't help any further with this, but you might be able to help someone else after you find out which quest it is that's blocking this.