Wait, I thought that the teleporter in the "modern" section always teleports you to the house of the guy that gifts you the gold dust in the "modern" section?
Oh no... did I do something wrong by getting the gold dust beforehand?
Edit: No, I didn't. It doesn't matter.
Update: WAIT! Is it the doorway that leads to the bedroom? (It is!)
Update 2: I completed the route!