In the last quote I listed, Chase discusses the POV shots. He admits much of the diner scene is shot in Tony's POV. Some people ask, why was there no gun shot?

Bobby Bacala once said, "You probably don't even hear it when it happens right?" Also, Silvio was at dinner with a New York gangster once. That gangster was shot and blood splattered - and then we heard the gun shot after. Also, I am not into science, but bullets probably travel faster than sound and it is simply logical that Tony would never hear the gun shot.