Guys Deej said he can only show us the door/doorway, and Cozmo has Pocket Infinity equipped, why the hell would he have it equipped? Because the description for Pocket Infinity is "You cannot shake the feeling that this is less a weapon than a doorway"
Its the key! We need to do something with Pocket Infinity! I dont know what but something!
Edit: Its funny too cos i abandoned this idea a while ago and told my friends "all we have to do is wait for a specific mission to become the daily and it will give us that fusion core thing or the transmitter thing, bungie will decide when we get sleeper"
Then bam, new quest, it wasnt the daily but a new quest altogether
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I mean, I thought that it was obvious. The SS, Pocket Infinity, and Rasputin's bunker all look to be made similar, plus, as someone has found out, they all have the same recurring symbol on each other.