Warning: SPOILERS for Obi-Wan Kenobi episode 3.
One part of Obi-Wan's duel with Darth Vader in Obi-Wan Kenobi episode 3 connects to Luke Skywalker's duel with Vader in The Empire Strikes Back, and even slightly explains one line of dialogue. So much of the Dark Times era in Star Wars canon has been unknown to viewers, with the bulk of stories being relegated to Legends. Some parts have been explored over the years, such as with Star Wars Rebels and Rogue One: A Star Wars Story, but Obi-Wan Kenobi provides unique insight.
With the new series on Disney+, the Star Wars franchise is able to answer several questions about Obi-Wan Kenobi and Darth Vader, and the state of the galaxy itself, that have been lingering ever since Star Wars: Episode III — Revenge of the Sith released in theaters, such as: Did Obi-Wan ever face Darth Vader before A New Hope? That was, of course, answered in Obi-Wan Kenobi episode 3, though in all likelihood, there will be another duel between the two before the season comes to an end.
Related: Why Darth Vader Let Obi-Wan Kenobi Go
Before Darth Vader uses the Force to drag Obi-Wan through burning flames, the Jedi Master briefly escapes the Sith Lord by breaking a vent and blasting the vapor into Darth Vader's face, thereby concealing his escape. Luke Skywalker does something similar during his own duel with Darth Vader on Cloud City in The Empire Strikes Back. And interestingly enough, immediately after Luke blows the vapor into Darth Vader's face and buys himself enough time to get his lightsaber, Vader says, "Obi-Wan has taught you well." It's a small, but fun connection to draw.
Of course, Vader continues that line by adding, "You have control of your fear. Now, release your anger. Only your hatred
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