Boba and Bane have a relationship that is built up over TCW, which paves the way for the resolution here. The only problem is, you have to have seen that show for it to have any meaning, which isn’t great if it’s the crux of your new show’s finale.
The sudden inclusion of Mando was enough to clue me into “ah, they’re going to draw on other SW content for their main structure and content, and assume we already know about it,” so at least they signalled it. It makes me wonder - how do you even measure good narrative structure and setup any more in the digital information age? But that’s a whole other conversation.
It’s a shame TCW is animated, because otherwise you could use it as flashbacks in the bacta tank. Perhaps just some audio of the two speaking could be put over footage of Boba sleeping in the tank, to imply a memory/nightmare?