The main problem is that you will arrive at Term 2 with AC. Your departure on TG will be from Term 1. I suppose you will have to clear immigration at 2A, then go to T1, clear police and then go to *lounge. When you're done at the lounge, you will have to clear immigration again to exit the terminal and go to Paris, and clear immigration again when back for your TG flight. This may be an issue if you have a limited entry visa, or if the transfer desk decides to take you directly from 2A to T1. Note that this is speculation only...