I think you see Artemis turning all the way to 20 seconds because they are not coming out of the tack on a close hauled course, they overstood the mark and are bearing away to go to the mark. I think if Artemis had accelerated out of the tack close hauled, GE would have cleared their stern. It looks like Artemis spends at least 1-2 seconds spinning their boat to the mark instead of accelating close hauled.