They were investigating the same thing that Joyce and Hopper were, except they knew how to turn off the machine
They were the only ones who knew how to navigate the Russian base.
Alexei could have told them how to navigate there
^Too bad Alexei was too dead to help, and as Durga said they knew how to navigate
Too dead to help 💀
No
Because if they weren't there then the Russians would have accomplished a lot of things to open The Gate
What do you think?