1:09 - Thrawn's posture (hands behind his back) and position (on the bridge of a Star Destroyer) mirror Vader's in The Empire Strikes Back [20:27]:
1:28 - Thrawn (to an officer): "Commence the attack." Admiral Ackbar has a similar line in Return of the Jedi: "Commence attack on the Death Star's main reactor!" [1:54:46]
15:17 - Thrawn (to his forces): "Concentrate fire on the center of the storm!" In Attack of the Clones, Yoda directs the clone troopers to "Concentrate all your fire on the nearest starship" [2:02:03], and in Return of the Jedi, Admiral Ackbar gives a similar command: "Concentrate all fire on that Super Star Destroyer" [1:58:43].
16:29 - Ezra: "Chopper, get us outta here." In A New Hope, Han also says this (to Chewbacca): "Chewie, get us outta here!" [55:26].