There is speculation that Daryl (Norman Reedus) was communicating with Rick (Andrew Lincoln) via Morse code. Daryl was blinking extremely fast and Rick was tapping his fingers on Negan's (Jeffrey Dean Morgan) bat. An earlier scene showed a Morse code poster.
Negan (Jeffrey Dean Morgan) is seen drinking the can of orange soda that Denise (Merritt Wever) had originally gathered for Tara (Alanna Masterson).
The Saviours arrive at Alexandria three days after the events of the premiere episode of the season, The Day Will Come When You Won't Be (2016).
This episode includes the first mention of Shane Walsh, played by Jon Bernthal, since Season 4, Episode 9, After (2014).
Negan (Jeffrey Dean Morgan) mentions that he needs to shave his facial hair. This is another reference to his comic counterpart, who is clean shaven