What about Biel?

The annual chess960 tournaments at Biel (Switzerland) have been running for some years now and I've never given them a good look. In a recent post, Talking About Chess960 (July 2023), Biel appeared twice with links to the results:-

'ACCENTUS Chess960 (ACC) - Biel International Chess Festival (bielchessfestival.ch; w/ PGN)' *and* 'Swiss Rapid Fischer Random Championship (bielchessfestival.ch) • The runner-up was popular streamer "IM Rosen Eric"; possible action: review his resources.'

That first tournament, 2023 ACCENTUS, was streamed live; the coverage starts at 9:10 in the following video:-

Biel Chess Festival 2023: GMT Chess 960 (2:59:21) • 'Streamed live on Jul 15, 2023'

The description doesn't add much except an error:-

Biel Chess Festival 2022 [?; sic] live from Biel/Bienne, Switzerland.

Before I discovered this video, my objective in the search was to learn about best practices for organizing and directing an OTB (i.e. not online) chess960 tournament. The year 2023 saw both a round-robin and a Swiss chess960 event in Biel. What can be learned from them?

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.