Joined Cases C-422/19 and C-423/19: Judgment of the Court (Grand Chamber) of 26 January 2021 (requests for a preliminary ruling from the Bundesverwaltungsgericht — Germany) — Johannes Dietrich (C-422/19), Norbert Häring (C-423/19) v Hessischer Rundfunk (Reference for a preliminary ruling — Economic and monetary policy — Article 2(1) and Article 3(1)(c) TFEU — Monetary policy — Exclusive competence of the European Union — Article 128(1) TFEU — Protocol (No 4) on the Statute of the European System of Central Banks and of the European Central Bank — Article 16, first paragraph — Concept of ‘legal tender’ — Effects — Obligation to accept euro banknotes — Regulation (EC) No 974/98 — Whether possible for Member States to impose limitations on payments by means of banknotes and coins denominated in euro — Conditions — Regional legislation precluding the payment in cash of a radio and television licence fee to a regional public broadcasting body)