Looking at GO1 footage and I'm curious as to this blockstring he does around 35:49
https://www.youtube.com/watch?v=EOeRZ2kkbCM#t=2148
He manages to use 5B 5A 5B in a blockstring and I've seen it used in multiple confirms by him. It's also used as a hit confirm string around 37:40 later in the vid. How does this work exactly? Doesn't it break chain combo rules?