He did let her rant on a little, but he clearly had his fill of it early on, when he told her "this works better if I ask you the questions."
Mary: ok, that will be fine.
Chris: thank you.
I thought his "thank-you" was pretty sarcastic, as I heard it.
Sorry, a sarcastic "thank you" from Wallace doesn't cut it for me.
He's unable to control the show and should be removed as host.