I couldn't watch tonight however I did see it last night.
Susan kept her mouth moving on irrelevant questions just to keep the swift boat guy from telling his story..
Instead, when she wasn't playing hard-nosed, rapid-fire, steely-eyed prosecutor, she was performing also as a guest, not only a host.
That is, she was posing questions and subjects, then quickly put her guest hat on to comment on her own comment and thereby fill up time.
In the meantime, the real guests sat there in states of shock from her onslaught. The interviews were over before they ever got to recover 100%.