response to About Robert Cohn

I wondered about the connection between Jake and Cohn because throughout the text, when Cohn was being referred to, Jake (or the narrator, one in the same) always referred to him by his first and last name:  "Robert Cohn walked up to us..." or "said Robert Cohn," when everyone else was simply Mike or Brett or Bill. I was keeping in mind the bit about Robert Cohn which began this edition of the book, making it appear to be a story about him, and that Jake was a newspaper reporter, and wondering if the text of the book was a newspaper article on Robert Cohn by Jake.
But then, about the time of the fight between them, this thing about referring to him by his full name stopped.  Did they merge into one outsider/American/writer?  I think he was simply underlying the point of Cohn being an outsider, and being the only character that wasn't simply along for Brett's ride, and was proactively trying to change the status quo where she was concerned, but the connection between them seems more significant than anything we discussed in class.