True, but I think that one was protecting the inner rooms, close to where pence was
I can't find the video of the first, outer cordon falling anymore, but this is the second, inner cordon falling at the beginning of this clip, followed by attempts to stop the protesters on the steps:
https://www.youtube.com/watch?v=6PCHra6JuuQ&t=3s
Then there was desperate fighting over doorways inside the capitol building.