From Castres on, there could be a chance. Some teams will try, I think. But everyone will know some teams will try, so I'm expecting nervousness and perhaps crashes as a result. Which could in turn create smaller groups.Crosswinds would work best on that D112 to the West, with SE wind (in the back). That enables the first echelon to go 60kmph with no hiding for those who are not fitting in that echelon. Only potential for max. gain of 30 seconds on that last stretch though.