New Witness in David Hartley Shooting?

According to Tiffany Hartley, after 6 months, a husband and wife have come forward to say that they heard gun shots. http://www.foxnews.com/on-air/fox-friends-weekend/index.html#/v/4649134/tiffany-hartley-on-falcon-lake-murder-mystery/?playlist_id=163197?test=facesIs this the same witness that came out 6 months ago, of whom Statement Analysis showed deception?From what Hartley said, it sounded