Bingowings said:
Bonkers idea incoming.
During the Clone Wars things could get so desperate that they start to clone Jedi.
So you could have an Obi-Wan clone called Ben who has a Padwan called Anakin and the original who is training the clone of Anakin called Vader.
Anakin turns to the darkside and adopts the identity of Vader because the both look the same.
Obi-Wan takes on the name Ben in exile in remembrance of his dead clone.
But how do you communicate that onscreen?