Return to Paris: Chicago ORD âžœ Paris CDG âžœ RER B to Les Halles âžœ Arts et Métiers airbnb@Rue au Maire ➜ walk around neigborhood and to Notre Dame and Pont  Neuf. Travel was easy. No waiting, no crowds anywhere: two hours from Hyde Park to gate at ORD, two hours from arrival at CDG to my airbnb@Rue au Maire. Grocery shopping at supermarche. Longer coffe break. Here is the rest of the afternoon…not much to add.