Bail Organa mentions to Leia that he wanted to chase purrgil when he was her age. Purrgil are giant whale-like space creatures capable of hyperspace travel and they have an important role in Star Wars: Rebels (2014), while also being mentioned in On the Wings of Keeradaks (2020).
The animal that Obi Wan rides, the Eopie, is the same animal he is seen riding at the end of Star Wars: Episode III - Revenge of the Sith (2005) when he drops Luke off at the Lars' farm.
This series marks Anthony Daniels's 11th live-action in-universe appearance as C-3PO and 45 years since the character's first appearance in Star Wars: Episode IV - A New Hope (1977). Previous appearances include every film of the Skywalker saga and Rogue One: A Star Wars Story (2016), as well as The Star Wars Holiday Special (1978). Daniels also appeared onscreen as C-3PO in various other television productions, such as The Making of 'Star Wars' (1977) (which he presented in-character), The 50th Annual Academy Awards (1978) (in which he was an onstage guest), The Muppet Show (1976) in 1980, and several episodes of Sesame Street (1969). He has also voiced the character in dozens of animated TV shows including Star Wars: The Clone Wars (2008) and Star Wars: Rebels (2014) and audio productions. Daniels is the only actor from Star Wars: Episode IV - A New Hope (1977) to play the same character in this series.
First live on-screen appearance of the Inquisitors. They were first featured in the Star Wars: Rebels (2014) series in which they were CGI.
This is only the second time Alderaan has been shown at ground level (on the planet) in live action. Accordingly, it is only the third time Alderaan has been featured in the Star Wars saga. The first appearance was in Star Wars: A New Hope (1977) where the planet was viewed from space on the Death Star. The second appearance was in Star Wars: Revenge of the Sith (2005) when Bail and Breha Organa were shown with baby Leia. The animated series Star Wars: The Clone Wars (2008) featured one installment that was almost entirely set on Alderaan: Assassin (2010).