I'm not going to bother looking up refrences. But 15 minutes or even an hour delay does no tmake the top 10. Stages have been cancelled because of Farmers strikes. Stages have been nullified because of rider protests or memorials. The Lance fans who are true Lance fans (meaning they followed him before he was winning the TDF, or at least learned about his early pro years afterwards) will realize the memorial stage for Fabio Casartelli had a huge impact on that Tour as it was one of the mountian stages where there would have been time to gain and there was a climber vrs. TT aspect in that Tour.
What would a Tour be without something like this?