It wouldn’t be the first time George Lucas used the plot of a Kurosawa movie to tell his own “original” story!
What the Bith musician Figrin Da’n (I know, after 45 years, every character ever shown in the movies have names) witnessed is rather amusing given how we the movie viewers know as nearly omnipotent viewers.
It would’ve been funny if Figrin brought up how it was weird to see all that blood on the floor when Obi-Wan’s lightsaber would automatically cauterize the injury.