I don't know who will be interested in this but I liked it because I'm also a massive Whitesnake fan.
On David Coverdale's Rockline, Lindsey asks a question inspired by his song 'The Right Place to Fade':
Hey, David, it's Lindsey Buckingham and my question is how did you know when was the right time to leave Deep Purple?
You can hear it on clip 3 on
http://rocklineradio.com/replay/replay.php