What sword is the guy on the right using? Also love the video, and slow sparring in general. Really helps you see what your doing wrong in the moment rather than having to learn from hindsight and reconstruct the mistake from memory. Its alot simpler to start moving the sword to do something, see its not going to work in real time and realize why in the moment. Then as you learn what will work and what wont, as you go back to normal sparring those lessons translate to knowing when to do what.
www.living-history-market.com/store/Turco-Mongol-sabre-Ultra-light-weight-775-825g-approx-p295120238 You've hit the nail on the head on how we use slow sparring to learn, as it basically gives the time to think and try find a solution to whatever problem your opponent is presenting. There are of course limitations to this as sometimes you need speed to create power in a cut to move a blade out of the way, but in this case where we are only attempting to win from the bind we find it a very useful exercise