I am arriving at T4 on BA309 at 1245 from CDG and connecting in T3 to AA47 at 1435. Is that too tight? I have tight connections on that portion of my DONE3 (CDG-LHR-ORD-ANC-ORD-SEA), so I am mulling whether it is worth it to get the ticket reissued just for an earlier flight from CDG.