Well-known interviewers choose the people they wish to interview.
"When I first met Cyril Connolly, perhaps Britain's most respected living man-of-letters, he was a daunting figure to a rather un-literary young man. But his interests as an author, critic, journalist, and editor are as wide as his sardonic humour is pervasive: it was easy to see why his reputation for conversation has been as great through his life as for his vast erudition..."
...is why Richard Kershaw talks to Cyril Connolly.