Originally Posted by
MSPeconomist
What happens if one ticket/flight is KLM and the other is AF or DL?
usually it works (and the other way around too DL to AFKL). DL has officially published 2 or 3 years ago a very limited list of ST airlines for which they agree to check bags on separate tickets (not all ST airlines are in). There is a thread about this on FT. AF & KL are part of this list thanks to the transatlantic JV. But you are still unprotected in case of misconnection.