I'm thinking they recorded the entire event, and then selected just a few from each group to focus on. When Westminster is on, every dog in each group is shown - that's why that show runs for two nights. It's like 6 hours over the two nights.

I like John O'Hurley with David Frei, and Mary Carillo is excellent at what she does. She often has segments on Bryant Gumbel's sports show on HBO, and her segments are great - full of information and fun.