New to understanding TdF so please excuse the idiotic questions. When stage leaders are minutes ahead, how do you know the peleton will catch them like the commentators state? Do they all talk in the group? Is it a given they'll catch them due to their slipstream/breaking wind as a group? ("breaking wind" didn't sound quite right...).
Just interested in the strategy. My family thinks you just pedal harder and win (like racing cars is just going around in circles and if you push the pedal harder you'll win). I see when the peloton is about to catch them they just resign themselves to it, is it due to fatigue? Why will Valverde certainly relinquish the yellow jersey? Is it because he's now a marked man and the team will burn out trying to keep him at the front?
I find the strategy fascinating. Excuse the dumb questions, just be thankful cycling has a new fan.