Sky played the bluff today and nobody called it! You have to give it to Froome and Sky they know what they are doing.
At the end of that stage it was obvious Froome was not feeling it, but you would have never known until that moment and that's because of what sky did on the climbs. Bringing back Contador and Barguil. Then slowly reeling in Cummings, making it seem like Froome was feeling good and wanted the stage win. Landa set a hard pace, which Froome was probably red lined, but in doing so every one thought Froome was feeling good which led to no one attacking till last 300 meters. Had they let Contador on a longer leash and not reel in Cummings with a blistering pace, someone would have attacked earlier exploiting Froome and he would have easily lost a minute plus.