Complex sentence: Wilson, who is now being treated with conventional psychiatric intervention, refers to that period of his life as "the Landy years," acknowledging, on "Larry King Live" in 2004, that Landy took what he now claims is questionable control.
Split into simpler sentences: Wilson, who is now being treated with conventional psychiatric intervention, refers to that period of his life as "the Landy years". While appearing on "Larry King Live" in 2004, he acknowledged that Landy took what he now claims is questionable control.