Carroll won this debate I had seen this
I watched the debate months ago, so I've forgotten too much detail about it. But it seemed to me that Carroll made only one strong objection to Craig's case. He quoted Guth to show that WLC had misinterpreted the BGVT.
Right. Just like the first premise in the Kalam Cosmological Argument is really just an assertion. There is no actual argument to defend the premise that "everything that begins to exist has a cause".