0:36 - Imperial driver (as Zeb and Ezra commandeer the walker): "What the?" In Attack of the Clones, an alien on Coruscant makes this same exclamation as he sees Obi-Wan flying through traffic while hanging from a droid [15:08]; Han Solo says it in A New Hope after emerging from hyperspace into a meteor shower [1:03:15]; and in Return of the Jedi, a scout trooper says this after being hit by Wicket [1:05:38].
1:10 - Ezra: "Plug in, Chop. We need prisoner logs of all Imperial detention facilities." Obi-Wan gives the same command to R2-D2 in A New Hope: "Plug in; you should be able to interpret the entire Imperial network" [1:09:06].
1:53 - Sabine (to Chopper): "No connection? That's impossible. The entire system would have to be down." In The Empire Strikes Back, Luke also says, "That's impossible" [1:51:21].
3:11 - Ezra (after Zeb falls onto the front of the walker): "I can't see; move!"
Zeb: "Move? Move where?"
Ezra: "Anywhere!"
When the dianoga grabs Luke in the Death Star trash compactor, Luke and Han have a similar exchange [1:20:37].
Luke: "Blast it, will you? My gun's jammed."
Han: "Where?"
Luke: "Anywhere!"
3:52 - Zeb (to Chopper): "Move, you stupid junk pile." In A New Hope, C-3PO similarly insults R2-D2 and calls him a "nearsighted scrap pile" [9:56].
5:41 - Ezra (to Hera): "What are you talking about?" This line appears three times in A New Hope: twice, C-3PO asks R2-D2, "What are you talking about?" [6:51 and 9:47], and later, in response to Luke's urge to rescue Leia, Han Solo asks, "What are you talkin' about?" [1:11:03]. In Attack of the Clones, Anakin also asks Padmé, "What are you talking about?" [1:43:07].
15:39 - Tarkin (to the Inquisitor as they watch Kanan being tortured): "The Jedi is no good to me dead." In The Empire Strikes Back, Boba Fett says the same thing to Vader about Han Solo, who's being tortured in the next room: "He's no good to me dead" [1:30:57].
17:41 - Imperial officer (to Chopper in disguise): "You're late 264; plug in." See 1:10 above.
20:52 - Hera (to Ezra): "Kanan has taught you well." Similarly, Vader tells Luke, "Obi-Wan has taught you well" in The Empire Strikes Back [1:44:42] and in Return of the Jedi [1:49:01].