Originally Posted by
shenoynigans
Although I will also be asking the agent at KLM/Delta later today, does anyone know if I buy the ticket with Czech Airlines, if they would be willing to merge it to my existing reservation, since KLM, Delta, and Czech are all SkyTeam partners?
No it's not possible to merge a separate reservation. The best you can ask them to do is cross reference the PNRs, but that doesn't do anything to protect you if you're delayed/cancelled for some reason out of PRG, it just lets the KL agent in CPH know why you're not there when she's calling your name over and over for final call if they bother to look at all.