I learned this choke from John Baylon (BJJ black belt and 6th degree black belt in Judo and 2x Olympian).
The technique is pretty unusual in BJJ and is very powerful and effective as you are using bout your hands and both legs against the opponent’s neck when he goes for the double underhook pass. Try it out next time in training! OSSS!
Sloth Jiu-Jitsu: you can be slow and unathletic and still kick butt in Jiu-Jitsu.