Matt “interrupted” Hillary only in an effort to get her to wind up her very long answers. Other than that, the floor was hers.
Matt really did challenge Trump on almost every little thing. Constantly implying that Trump lacked the experience to do the job (Hillary has 30 years experience at this stuff was the message). Also, Matt really did jump in and defend Hillary on more than one occasion.
Lauer tried to torpedo Trump, but he wasn’t man enough for the job.
Hillary long answers = Knew questions in advance!
(Hillary has 30 years experience at this stuff was the message)
...
But still didn’t know what all those big C’s meant on her emails.