"Oh, if it was Tatooine you can be forgiven. I can't deny, it's not somewhere I'd prefer to live." He's not wrong. Luke left that planet and has done his level best not to look back. Although, he acknowledges that for a little blip in the middle of nowhere, an awful lot of important things have happened on the sand.

As they hop along from one boat to the next, Luke considers how to break the news: "I spoke with someone named Ezra. Do you know him?"

He could lie or just 'omit the truth', and a nasty little part of him is interested to see how Obi-Wan likes it, but it won't do either of them any good.