Actually, it reads more like the narrator is the one speaking.

There's a difference between "He said this, she said that." and "This," he said, "That." she replied.

That, is one of the differences between first and third person.

No Country For Old Men is (apparently, I couldn't get through the writing style to finish the book) written completely in first person. "I" is used a lot, especially in that first chapter.

Also, the author is a professional. He's mastered the essential basics, NOW he can play with the rules for stylistic purposes.


Another thing (although it really hasn't been an issue here) is the use of first, second, and third person.

First person is I. I am telling you what I see.

Second person is You. You are doing this. (Rarely used well, I for one have issues with being told what I'm doing in a story)

Third person is They. Basically. This person saw that. That person is doing this.
There are two types of third person writing- the first is where the story follows one person, and the readers are only told what that person knows or finds out. The other is Third Person Omniscient- The readers get to see most sides of the story.