For the four factions (the Institute, the Brotherhood of Steel, the Minutemen, and the Railroad), what is the last quest that I can complete for each faction, in each of their quest lines?
I completed "The Molecular Level" and got help from the Railroad, so they want me to help synths escape. And I'm also doing quests for the Institute right now.
I also want to continue quests for the Minutemen and the Brotherhood of Steel, but I haven't received any quests from them in a while. Am I already done with the quest lines for those two factions? If I had gotten help from either of these factions instead, then would their quest lines be the ones that I would be continuing, rather than the one for the Railroad?
Is there a way for me to still continue the quest lines for those other factions? For instance, could I return the to the Brotherhood and return the Institute holotape to someone, to start a new quest? Or would that not do anything if I didn't already have an existing quest for the Brotherhood?
I have not yet received a warning stating that I am about to damage my reputation with another faction. Also, I ultimately want to end the game as an ally of the Institute, if that matters.