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William's first trip to the park with Logan. We see William’s descent into ruthlessness as he searches for Dolores.

During Maeve’s escape, we see a "SW" logo and hosts dressed as samurai, confirming Westworld is only one of many Delos parks. Westworld_1x10

His final narrative, "Journey Into Night," was not just a story—it was a literal retirement plan where he allowed Dolores (as Wyatt) to kill him in front of the Delos board, sparking the host uprising. William's first trip to the park with Logan

The finale confirms that we have been watching two distinct timelines: "Journey Into Night