That Jango was getting nervous as Obi Wan asked him "recently?" (of making his way to Corucant), then a hesiatant pause......
"possibly". Or do you think he was still keeping his cool?
Plus what was the language that he spoke to Boba?
And since he was speaking a different language wouldn't have Obi been able to understand what he was saying through use of the force like he did with Chewie in ANH, or perhaps that is a skill that comes later.