My fireteam member and I were on the last phase of the boss with 4 minutes left in the quest, sure that we would complete it. Then Destiny suddenly sent me to the title screen, without even an error code, and I could not rejoin his fireteam to complete the quest. My internet connection is 81Mbps download, 21.5 upload and I am connected to my wifi through ethernet. I'm not sure if this issue was on my end or on Destiny server's end, but I am incredibly displeased that I was kicked from the quest right before completion, as the quest is going to be going away in less than a week.