I have a bit of time to kill at CDG in about a week. I arrive at terminal 1 but depart from terminal 2C. The Amex Platinum lounges that are closest to my departure terminal are in terminals 2A and 2D. It appears that there is not airside access between the terminals in terminal 2. Is it doable to hang out in the lounge in terminal 2A or 2D and then get to my flight in 2C?