Walter Cronkite fell victim to the myth that the WC concluded Oswald fired all three shots in under 6 seconds. I don't know how that ever became a widespread belief because the WC reached no such conclusion. They were noncommittal on the time span of the shots. They concluded that two of Oswald's shots struck JFK and one of those hits also went on to strike JFK. The two shots that struck JFK hit him between 4.8 and 5.6 seconds apart. That much is true. The WC also indicated there was likely another shot that missed although they did not conclude which one of the three shots missed. The examined three scenarios in which the first, second, or third shot was the one that missed. The reached no conclusion as to which shot missed. They even allowed for the possibility that Oswald only fired two shots and the reason there were three shells found in the sniper's nest could have been because Oswald ejected a spent shell from the chamber before he commenced firing. I don't think anyone has ever bought into that possibility.
In short, Walter Cronkite was simply wrong when he stated the WC concluded the first shot was fired at Z210. The WC concluded that the shot that hit JFK in the back was fired between Z210 and Z225. They were correct about that but they never said that was Oswald's first shot.
