The other key takeaway from the episode: Dolores has seen everything. There was reason to believe, as the season started, that the host revolt would be short-lived. Not only are the hosts hugely outnumbered, but we assume they don’t know anything about the world outside the park, much less how they’ll carve out a place for themselves in it. Over the multiple timelines in “Reunion,” however, we see that Dolores has been absorbing information through multiple builds and an array of different experiences, some of them outside the park. In the opening scenes, as Bernard and (an offscreen) Ford are readying the androids for a demonstration for Delos, Dolores gets a clear view of the city. She even has some canned dialogue about how the city lights looks like “the stars have been scattered across the ground.”

The pattern continues as the episode unfolds. Dolores witnesses the postcoital scene outside Logan’s bedroom on the night of the demo, as Angela (Talulah Riley), the host who will later welcome William to the park, seals the deal. Dolores is frozen in her loop as William sells his father-in-law on the investment in Sweetwater, but the episode’s director, Vincenzo Natali, makes certain to note her presence at the end of the conversation, unmoving but eyes open, listening. Dolores also appears in yet another timeline as the pianist at the father-in-law’s retirement party, which doubles as William’s “coronation” as the head of the company. She listens to a drunk Logan bitterly predict the end of the species. And she turns up again behind the scenes with William, who unwittingly reveals the “weapon” she later intends to use against humanity.

That’s a lot of timelines. The William/Man in Black timelines in the first season now seem like training wheels that have been taken off. In “Reunion,” only two story lines — one following Dolores, Teddy and company as they assemble an army and have a run-in with Maeve, the other following the Man in Black and Lorenzo as they start their search for the Door — take place in what we might call “the present,” unfolding in continuity with the revolt that began at the end of last season.

All other story lines, meanwhile, exist somewhere along a continuum of staggered flashbacks: We see Arnold with an early version of Dolores. We see William before and after he convinces his father-in-law to invest. We see Logan as the confident master-of-the-universe type who’s wowed by the demonstration and then later at the retirement party, as the broken man who anticipates human extinction. Some of these story lines do or might already overlap, and some or all of their respective timelines may converge or disappear. But it may be wise to invest in graph paper in order to follow along at home.

Paranoid Androids:

• The first two episodes have been filled with callbacks in the dialogue, which could be defended as a reminder of the host’s loops or derided as indulgent self-reference. But Bernard’s line about getting used to the city lights (“After a while, it doesn’t look like anything at all”) cleverly brings us back to Dolores’s father glitching over a picture of the outside world. “It doesn’t look like anything at all” is what hosts say when they don’t understand something. But we know now that Dolores was absorbing more than perhaps even she realized.