Old School SW fan here.
Just wondering how does Obi Wan know Darth Vader is Anakin when they meet on the Death Star?
In other words from what I gather Obi Wan never sees Anakin/Darth after the lava battle. He may assume he is killed. Or that he has been saved and heard that he was transformed into a 'machine". After all he goes and lives a hermit lifestyle shortly after dropping the twins off. Doesn't mean he is not keeping up with the outside world per se.
I haven't read the script so it may be answered in there.
Perhaps I am falling into the old "tie the loose ends up" issues that alot of people have with various SW matters.
Probably a common sense answer that GL doesn't need to provide an answer for - just my inane curiousity.
Anyway wouldn't mind your thoughts.