Case C-45/24, Verein für Konsumenteninformation (Commission collected by an intermediary): Judgment of the Court (Fourth Chamber) of 15 January 2026 (request for a preliminary ruling from the Oberster Gerichtshof – Austria) – Verein für Konsumenteninformation v Koninklijke Luchtvaart Maatschappij NV (Reference for a preliminary ruling – Air transport – Regulation (EC) No 261/2004 – Article 8(1) – Reimbursement of the price of a ticket in the event of cancellation of a flight – Commission collected by a person acting as an intermediary between the passenger and the air carrier when the ticket was bought – Conditions for inclusion – Amount of commission allegedly fixed without the air carrier’s knowledge – Burden of proof)