I'm in the mission in Fallout 4 where I need to build a teleporter to infiltrate the institute, and don't know who to ask. IMO I wouldn't ask the Brotherhood because I think they're just a bunch of assholes but instead I'd ask Minutemen or Railroad.
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Contract the institute for a relay lmao.
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Pick the railroad, then kill them all
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Doesn't matter. You only choose which faction helps you building it. Not which faction you side with for the rest of the game. That happens later.
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It does not matter that much. I chose railroad.