In this episode, Fet reveals that prior to the outbreak, the last interaction he had with his father was on the phone 6 years ago. But in Season 1, Episode 6 (Occultation), his father says that Fet appeared "after 2 years".
After the trade of information between Setrakian and Eldritch, Eldritch is given a half-full vial of "formula White" by Setrakian.
In the next scene, in Eldritchs' penthouse, Eldritch hands the vial over to his nurse, which now appears to be full.