"Thanks. Hey, wait a second." How did he just-- "How do you know where this currency is from?" Hughes hasn't spoken with Schön before, so how does he know what kind of money it is?

He's not going to take his candy bar yet. This has the Intelligence officer very much on edge. No one's supposed to know more about what's going on in a place than him. Perhaps that's why Katsuya warned him about Schön?