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Attention: at the beginning of Round 3, the video is cut off. That repeat is: (Back Post SC, Ch4)
The “chain 4” part is cut off. To be clear, Rnd 3 is:
(Back post sc, ch4) 8 times, do not join the round.
Source : https://www.youtube.com/watch?v=xXHo6RpGSCQ