Originally Posted by
RolfD
the EC 261 is clear the carrier that issued the tickets is responsible for the delays, that is why the OP should get a lawyer
The European Commission's website says otherwise:
In some cases the airline operating the flight may not be the same as the one from which you bought your ticket. In case of any difficulties only the airline which operates the flight can be held responsible.
Has there been a EU judicial decision shifting the responsibility from the operating carrier to the ticketing carrier?