Re: Nibali vs. Froome. a very old and very boring argument. You do what you can within the rules to win. That's it.
As for tomorrow, 2.40 is not actually an insurmountable obstacle for Quintana. I have a feeling that he hasn't yet put everything into any of his attacks. He's fresher than Froome at this stage and he has a stronger core team around him. However, Froome will hang on but perhaps it will be far closer than people were thinking a week or so ago. I don't think Nibali will overhaul Valverde however, simply because he has given a lot today, although if Valverde is forced to work himself to teh ground for Quintana tomorrow, it could happen... and finally, I think Contador will try something big tomorrow, and he could conceivably overtake both Nibbles and Valverde.