Actually AF doesn't want to use 343 on its routes to DOM, the problem is that now 747 that they use goes all the time with 85-99% occupancy. 343 will create a huge deficit of availability.
Air France will use only the A343 in the summer period and then back to B747 i think they use the B747-400 because they have some planes free (no flights to M.E.)
Alitalia have also a codeshare agreement on CDG - SDQ route from 15 June 2003
