Make Reservations: if any of the French rail stations are an origin or destination (Lille-Europe TGV Rail Station, France (XDB)), for example, and one is searching for Business First tickets, the results indicate that there are no BF seats available on the TATL portions.

Eg: search for EWR-Lille-Europe TGV Rail Station, France (XDB) 9/14/08, return 9/19/08 in BF - only coach fares are returned... but, search for EWR-CDG on the same dates, and BF comes back for the same TATL flights.