Master Renzo Gracie explaining a Gogo choke

I believe this is the choke Ben Rothwell used to submit Josh Barnett last Saturday on UFC Fight Night 18, as explained by Master Renzo Gracie during his last visit to Mexico City. Translation to English by the kind Anjani Siddhartha: We are here, so I put my hands It is very subtle, the main idea is to keep his head here like this (0:17) the hand under the chin, the second hand this way (0:34) then you squeeze your fingers and move your hands down (0:46) move your body, stomach forward and pull