Indeed it does as theultimateflyer says, hold on to your boarding pass, but given it is on one PNR, this is unlikely to be an issue. With a 4 hour layover on the ORD-CDG flight, you should have time to enjoy the CCR. Do see the dashboard for details of how to maximise your F experience; perhaps you want to book a treatment at the Elemis Spa (available to book 28 days in advance of your arrival through YouFirst), use a cabanna (there are only 3 but can be booked well in advance) or perhaps just a nice meal in the dinning area.

Unfortunately, with millionaires' door now permanently shut, you will need to exit security, take the escalator down and then back up to the lounges (this only takes a 4 minutes stroll unless you stop to shop), or else exit landside and re-enter via the new First Wing.

Enjoy your flights.