Given the team say he’s not ill, then it feels very much like a Simon Yates collapse, and I think it may prove to be the culmination of a few different factors - he had a stressful/emotional start to the race with the TT in the dark, the days of complaints about the organisation must have wasted emotional/psychological energy, let’s not forget he crashed after his stage win which also would have cost him energy & recovery, and whilst it hasn’t been the hardest GT there have been moments of hard racing like the crosswinds the other day…I would guess that all of those factors led to him having empty legs yesterday on the Aubisque, and as others have said he clearly then sat up and gave up on GC