You get booted for being /dead/ in a Grandmaster due to inactivity if there are no revives.. coooool

TL;DR: Don't die in the boss room, you'll get booted for inactivity if it takes too long for your teammates to finish the encounter. (But only sometimes.. because cheeseforever's fireteam member didn't in their video. cooooool)

EDIT: I guess you have to go in your menus (unhelpful for your fireteam, but ok) / push buttons that don’t do anything to re-trigger the afk timer. Bungie, plz. Interacting with your camera angle and switching to your fireteam's bodies should count as movement.

2nd edit: all the upvotes! I wish I could give everyone who has experienced bad AFK juju here a hug. I’ll share an upvote instead. Share those stories! Let’s get AFK timers improved!

3rd edit: 15 hours later... did it again. LET'S GO, COMPLETION #2 GUY GOT HIS TRIUMPH. YES

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My clanmates and I just completed the grandmaster Glassway and in the boss fight were at the final phase, and one of our fireteam members died. We were past the 30 min mark, so no revives. They then got booted for inactivity after dying while we were finishing up the last phase. Because dead ghosts can't move, there wasn't activity in terms of "movement" obviously despite him making callouts from his camera angle on his ghost :(. He was moving his camera, switching to our field of view too to watch our backs. So he was active.

We ended up beating it, but the 3rd member who got booted due to not being able to do anything while dead couldn't join back up due to locked fireteams.. and clearly didn't get the triumph for their hard work :////

I posted on Bungie Forums to see if they'll do anything to reward the guy his triumph.. but my guess is nothing will come out of it apart from "get good, don't die"... but anything else anyone can suggest we do to try to get our 3rd their triumph? We're going to re-run it tomorrow to get it again but dammmmn, it felt bad man finishing it after he got booted.