Add Natalie Cole to the list of people who think Whitney Houston made a mistake going toe-to-toe with Diane Sawyer on Primetime last week. "I think the timing was crappy," Cole told Access Hollywood. "The questions were extremely difficult, very invasive, and it's just too hard to do that. I don't even know, as a totally sober person of 20 years, if I would even like answering those questions."