I studied the photos at Graham Watson web site on stage 16. Photos show no triple front. all the photos show racers climbing with small chain wheel front and largest gear in the rear. Small chain wheel seems to be smaller than normal, meaning smaller than 39? They still seem to have small gears in the rear but I can't imagine 11 or 12 even 13 that they'll never use for climbing only time trial.
Does anybody know what gear combination they prepared for that time trial? I specially want to know the size of inner front gear and biggest gear in the rear. Since they all seem to be using racing size derailler, which most of them limited to 26, is that what they use?