Question:
When I checked the transcript, I was flabbergasted; so I checked the C-SPAN tapes, and they leave no doubt.

Does it follow that "I was dumbfounded by what I saw when I looked at the transcript."?
Answer:
yes

Question:
yeah yes you can hear her huh

Does it follow that "Only you can hear her huh."?
Answer:
it is not possible to tell

Question:
He kept his eye on the visi-plate.

Does it follow that "He turned away from the visi-plate."?
Answer:
no

Question:
'Oh.'

Does it follow that "Darn."?
Answer:
it is not possible to tell