^^ Sure looks that way.
This as a great episode. Sarah was fantastic as a 1950s nurse-- it was like she stepped out of an old movie. And I loved Duke dealing with time travel ("I know the time travel rules") and Nathan trying to keep everything under control ("You can't mess with the... uh... space... time... continuum....").
And it looks like Audrey's FBI handler was around back then, too. Weirder and weirder.