Opinion of Advocate General Collins delivered on 23 November 2023.#European Commission v Deutsche Telekom AG.#Appeal – Competition – Articles 266 and 340 TFEU – Judgment reducing the amount of a fine imposed by the European Commission – Repayment by the Commission of the amount unduly collected – Obligation to pay interest – Characterisation – Compensation at a standard rate for loss of enjoyment of the unduly paid amount of the fine