In reply to Natalie Berry - UKC:
Ok, I understand now. From looking again at the video and seeing Shauna's sequence it becomes clear that the holds are not scored in the order right to left along the traverse but in the sequence Shona takes them.
i.e. from L-R the holds score 37-35-36-34 where 37 is the hold Shuana didn't latch and 34 is the white and black triangle....
See video, Shauna at 4:56 and Janga at 4:06
It does seem counter intuitive that the holds are scored with refrence to the setter's intended sequence rather than phycical position along the traverse.
Post edited at 13:50