Thembi Wallace, the journalist who accosts Trish's mother outside the hospital, is the same one who interviewed Mariah in Luke Cage (2016).
As of this episode, Rob Morgan's character Turk Barrett has appeared in at least one episode of every Marvel Netflix series except Iron Fist (2017), though he did appear in an episode of The Defenders (2017), which features the Iron Fist character.
When Turk meets Jeri under the bridge, he gives her a bag of fries from a restaurant called "Harlem Shake." This is a real restaurant in Harlem, named after the brief but wildly popular dance meme, which was in turn named after the song the meme featured, Harlem Shake by Baauer.
When Alisa is stealing the RV, the kid is playing with his tablet, on which can be seen the same Jack Kirby-inspired monster stickers that were on Danny Rand's desk in Black Tiger Steals Heart (2017).
The song playing in the RV at the end of the episode is the theme song for the show.