"The circle is now complete," Vader said, moving his lightsaber in a circle. "When I left you, I was but the learner, now I am the master."

"Only the master of evil, Darth," Obi-Wan replied. "If you strike me down-"

"Stop," Vader interrupted. "I – are those – are you wearing my kriffing robes?"

Obi-Wan blinked.

"What?" he asked, distinctly thrown.

"My robes," Vader said. "From Mustafar. I remember that day better than any other, Obi-Wan, because you cut three of my limbs off and left me to die. And I remember distinctly that the robe you were wearing was light brown. Not dark brown… and then you lived in a desert for decades."

He stepped forwards, implacably. "Are. You. Wearing. My. Kriffing. Robes."

"...yes," Obi-Wan replied. "I'll be honest, Anakin, my memory of that day is a bit-"

"WHAT!?" Luke shouted.

Vader and Obi-Wan both turned to look at the Millennium Falcon.

So did several stormtroopers, at least until Han, Luke and Chewbacca shot them.

"Were you about to sacrifice yourself?" Vader asked, his voice burning as he turned back to Obi-Wan. "To let them escape?"

"I was going to fight you," Obi-Wan replied, not very convincingly.

"I remember our battle, even if you somehow don't," Vader replied. "You're the master of Soresu, and you've got older, but my style was always Djem So admixed with Ataru to break stalemates – until you cut several of my limbs off, and I've never been able to do a backflip since. I've been getting by on just murdering everything, which isn't a form but should be, but I know full well that I could not defeat you if you put in effort… which you weren't doing."

"I am very old," Obi-Wan defended himself.

"Fifty-seven," Vader said, precisely. "The Emperor is eighty-four. Windu was fifty-three when he died, and you are missing the point. Why are you wearing my robes?"

"Because I wanted to remember you as you were," Obi-Wan answered. "C-3P0 brought them on the ship when he rescued Padme."

Vader's head tilted.

"...Padme was not dead when you left Mustafar?" he asked, then turned abruptly on his heel and stalked off into the innards of the Death Star.

"Um-" Obi-Wan began.

"I have a boss to murder," Vader informed him, darkly, like he did everything.

Obi-Wan looked baffled for a moment, glanced back at the 'falcon, then decided not to question his good luck and bolted for the ramp.

AN:

Stalling tactic success!