Originally Posted by
3Cforme
What needs to be more clear? The final carrier, by virtue of the interline receipt, is responsible for tracking and compensation.
Agree. However it should be noted, it's the carrier that delivers you to the last city the bags are tagged to. If final flight was supposed to be KL123 to PRG, but was rerouted and flew OK123 to PRG instead, OK is who you file with.