Whilst enjoying a nice hour-long rerun of Tranquility Lane and the inital Purifier maintenance tasks, I was permitted to sit and watch Doctor Li stand still and not talk to Lyons. Again. So thrilled by this turn of events, I attempted to utilize the SetStage commands for the quest ( Picking Up the Trail ), but, of course, I was unable to do so. You know, because I'm technically in New Vegas.
So, then I thought to myself, "Could a QuestID list be drawn-up for TTW? Do we have the technology?"... Pretty low on the list of priorities, but it would definitely be helpful. After all, this game ain't exactly a bug-free zone.
Issue was solved.