The most interesting aspects of his comments was he was never interviewed about that day. Seems to me like that would be an almost first step in any shooting investigation: ask the key witnesses.
A lot of eyewitnesses were never interviewed by the Warren Commission, including a lady who was at home across the street from where JD Tippitt was murdered. She adamantly stood by her claim that two men shot Tippitt, neither of whom was Oswald and one of whom looked an awful lot like Jack Ruby.