It turns out that this video is the first of two parts and that there are previous year streams going back to 2020. Before I go any further with this post, I need to determine exactly what I'm looking at.
The video for the full 2023 event encountered a technical glitch, lost some footage, and was restarted in a second part. Following are links for all live streams from 2020 through 2023.
'Biel Chess Festival 2023: GMT Chess 960' Commentators: GM Arturs Neiksans and Angelika Valkova
'Biel Chess Festival : ACCENTUS Chess 960 tournament' GM Arturs Neiksans and Angelika Valkova
- 2022-07-11: Full event
'54th International Biel Chess Festival  - Chess960' GM Arturs Neiksans
- 2021-07-24: Full event
'Biel Chess Festival 2020 - Day 1: Chess960' GM Ian Rogers
There is much to be discovered here, but I'll leave that for another time.