I've got a question re: breakaways. In the last couple of sprint stages, the breakaway have had a ~30s lead with say 20km left to go. Both times I noticed in commentary that they've said the peloton doesn't want to catch the breakaway yet. Why? I can understand they don't want to waste energy reeling them in as they'll be caught eventually, but the way they talk about it in commentary is if they're deliberately maintaining the gap.