Looking at some Flying Blue redemption options, I saw an ATL-CDG-ZAG itinerary that might work for me. ZAG leg is on OU which departs from 2D, and it's a long transfer. Would I be able to make my way to the newest 2E lounge before going over to 2D for the ZAG flight? Apologies if the answer is obvious but I'm not at all familiar with CDG. Thanks!