Case C-269/20: Judgment of the Court (First Chamber) of 1 December 2022 (request for a preliminary ruling from the Bundesfinanzhof — Germany) — Finanzamt T v S (Reference for a preliminary ruling — Value added tax (VAT) — Sixth Directive 77/388/EEC — Second subparagraph of Article 4(4) — Taxable persons — Option for Member States to treat as a single taxable person persons who are legally independent but closely bound to one another by financial, economic and organisational links (‘VAT group’) — National legislation designating the controlling company of a VAT group as a single taxable person — Internal supplies within the VAT group — Article 6(2)(b) — Supplies of services provided free of charge — Concept of ‘purposes other than those of the business’)