They've never done it the week after winning the World Championships.
Well there is I concede some possibility that Julian Alaphilippe and Patrick Lefevere know more about winning classics than me. But to me, some guy on a forum, throwing away a very likely Flèche in order to gain an improved but still difficult chance at LBL seems a bad bet. We will see at the weekend, I suppose. If he wins LBL, he looks very smart.