The Suns didn't "extend their window" by trading for Durant, they did the opposite of that. They took a 5-6 year window and turned it into a 2-year window, and now one of those years is gone, all they because they panicked over a down year, and overreacted, and they got a new team governor who wanted to make a big splash with his new toy. James Jones made moves that a GM should not have made unless that GM thought that his team was built around Chris Paul.