Hmmm. I looked at the video again more closely, and I see what you are saying now. It’s weird. They might be going through the snaffle bit rings to a flat piece on the front of the cavesson?
I don’t know what a contraption like this would be trying to achieve, other than forcibly tying the horses head down. It seems like a bronze medal rider like LK should be able to get a horse on the bit without riding with side reins or some sort of weird modified hackamore-tie down contraption.
I wonder if Ulf has a lot of students riding around with these sorts of contraptions? Somehow… I doubt it.