He is taken out his reverie and in the aftermath Oscar is clearly embarrassed. Living legend or not you just don't stare at a person like that. That is a good way to die or get beat bloody no matter where you are. Zenigata would scold him about it if he was here. So Oscar feels the need to apologize.

"No I don't. I'm sorry for looking at you like that. It was rude." His voice surely doesn't sound like he's from the Mojave or any of the surrounding areas. It's a clean almost book-learned English, with the trace of something foreign to most people in the desert. He's traveled a long way.

You don't expect to come to a major city only to be greeted by an actual Legend in the tales. He almost wants to ask him if the stories are true or it's all coincidence but keeps his curiosity on a leash for now.