I seem to be late with providing additional links to the videos, but anyway . . .
I didn't know who "Matt Walsh" was so had to google him. My original thought had been that the videos were either the complete, or excerpts of, the HOAC session with the USSS Director but as Walsh is not an official, I couldn't be bothered to find what that was about. However, Boebert is, unfortunately, a known quantity. Director Cheatle's appearance at HOAC is available at C-SPAN's youtube channel and Boeberts's questions start at this point.
As Tactical Tea pointed out, a bit of political theatre. I had started watching the committee meeting live on C-SPAN (actually not really live, the questioning had already begun, so I was about 45 minutes behind) and after going through most of the more senior members (
Boebert is relatively low on the totem pole - there's nearly 50 congresspersons on the HOAC, that's why the committee seats were mostly empty by the time she got to ask questions) the questions (
and answers from Dir Cheatle - such as they were) started to be repetitious. I gave up at that point. On going back to listen to Boebert, it didn't appear that she raised any new points, other than to have something to put out showing her questioning Cheatle.
The video overall is an interesting watch and the experience for Cheatle was obviously unpleasant. I couldn't help but think if these media assets had been available back during the US political assassinations of the 1960s or during Watergate, would the investigations into those events have been as relatively bipartisan as they were, or would they have been as nasty as it is now.