Originally Posted by irishguy28

Do not do this.

Pick up the phone and talk to Air France, or better yet talk to a travel agent locally. Air France is not a real travel agent, and they will predominantly only want to sell tickets on their own services, and a very very small subset of all possible partner flights. A travel agent will be able to issue these flights on the same ticket even if AF can't or doesn't want to.

There is no such thing as "combining" tickets once you have purchased them separately.