The first question was, yes or no, will Mueller testify to the House next Wednesday? His answer: No. Maybe yes or maybe no, or a flat no? His answer: I would say a flat no. This doesn't come as a surprise. The GOP Reps would be well prepared for Mueller and I don't think he'd want to--or even be able to truthfully--answer those questions.
Collins closed by stating that the real story coming up is the IG report, which will leave little to hide behind.