I've read other questions here about this, like this one and I'm still unclear about something. Some answers suggest that you can get the help of all the factions at this point to continue their quest lines.
But when I speak with one faction, it disables speaking with the others. The quest markers go away, and speaking with the other faction leaders doesn't give any dialogue about the teleporter plans. If I buy the plans back from Tinker Tom, for example, it DOES give me the quest objectives again, but they still wont talk to me.
From reading about it, your chosen helper will show up at the build site to help out, and it might be a bit awkward for all three to show up.
So is there an option to continue the faction quest lines (up to the point where you'll alienate one) from here? If I go the loner route and build it myself, will I be able to do the quests like getting Dr. Li to join the Brotherhood, Liberty Reprimed, etc?