I watched much of the video and he does interrupt other panelists frequently. He also gives a less obtuse lead-in and allows her to speak uninterrupted at around 27 minutes. Following that, other panelists acknowledge the importance of her statements.

Also, the panelist herself wrote that she thought it funny that the guy was asking and answering a question at the same time; she didn't feel she was targeted or silenced during the event.

This guy just likes to dominate conversations and lacks self/social awareness. I bet he's like that all the time. Does he do it more to the woman in the video? Yeah, you might have a good argument that he does. But I've met plenty of these people in management-level meetings and they do it to everybody; it's soooo annoying. Very hard to assert yourself without making things awkward. Impossible to assert yourself when it's a woman who's overriding everyone else.

The solution is usually to appoint a meeting moderator that everyone knows to be fair beforehand (obviously, this isn't always viable), but we found it shortened up our medical practice meetings quite a bit. The guy who likes to hear himself talk still goes overboard from time to time, but we have a third-party moderator who can cut him off without worrying about upsetting a supervisor.

If you both watched it, we could simply count the number of interruptions and see if she was interrupted statistically significantly more.

There's an objective answer and opinions don't really count here.

To be completely fair, it's not so simple. Opinions may differ in what constitutes an interruption, what's the threshold for considering someone tried to speak up and was cut off, about whether the attitude towards women was more forceful than towards men, etc. It's difficult to quantify these things.

"Statistically significantly" is not a magic word. It has no application when you sample the entire population (in this case, the entire video).