not sure what your flight times are or what else you're planning to do. we were faced with a similar situation. as far as I know, there's only one CDG-Beaune train, via Dijon, and that's early evening. or an early afternoon CDG-Lyon and back-track to Beaune. otherwise, it's the air france bus from CDG to Gare Lyon and train from there to Beaune via Dijon. We finally opted to rent a car and spend a couple of days seeing the countryside, staying in a couple of places over night and leisurely making our way to Beaune for a couple more days. i hope this helps.