I've edited my own post: I'm just rewatching, but I really have the feeling Küng and Ganna missed their chance at around 16/17kms? The problem of course is they're both there, so they're mostly eyeing eachother. But I think neither of em is sleeping very well right now... One of them could have tried to rip it and see who could try and follow? A bit of a missed opportunity, because when I watch it again, they didn't seem that drained.