Joined Cases C-197/20 and C-216/20: Judgment of the Court (Ninth Chamber) of 28 October 2021 (requests for a preliminary ruling from the Finanzgericht Hamburg — Germany) — KAHL GmbH & Co. KG (C-197/20) and C.E. Roeper GmbH (C-216/20) v Hauptzollamt Hannover (C-197/20), Hauptzollamt Hamburg (C-216/20) (Reference for a preliminary ruling — Customs union — Common Customs Tariff — Tariff classification — Combined Nomenclature — Tariff subheadings 1521 90 91 and 1521 90 99 — Interpretation of the Explanatory Notes to subheading 1521 90 99 — Beeswax melted down and solidified prior to import)