This is a technical question. I am flying on Delta from the US to Paris and from Paris to the US on the return flight. However, my return flight originates in Marseille, where I will be catching an Air France flight from Marseille to Paris (where I will then catch my Delta flight going home). I booked all flights through Delta, using Delta mileage points for the Delta flights. But because of issues with the use of Delta miles, I paid in cash for the Air France flight, and I have separate confirmation numbers for the Air France flight and then the Delta flights.
When I check in for the Air France flight in Marseille, can I have my bag checked-in for transfer to my Delta flights and the final destination? Both Delta and Air France are Sky Team Alliance partners. I have been given conflicting information by Delta representatives on whether I can do this. But I do not have the time to check-in a bag on Air France in Marseille, collect the bag in Paris, and then check-in the bag and go through security in Paris. The options are (a) check-in the bag in Marseille, which then will be transferred to Delta, if this is possible; or (b) carry on a smaller bag than the one I planned to bring.
Thanks in advance for any guidance that can be provided.