Case C-574/21, 02 Czech Republic: Judgment of the Court (Third Chamber) of 23 March 2023 (request for a preliminary ruling from the Nejvyšší soud — Czech Republic) — QT v O2 Czech Republic a.s. (Reference for a preliminary ruling — Self-employed commercial agents — Directive 86/653/EEC — Article 17(2)(a) — Termination of the agency contract — Entitlement of the commercial agent to an indemnity — Conditions for granting — Equitable indemnity — Assessment — Concept of ‘commission lost by the commercial agent’ — Commission on future transactions — New customers brought by the commercial agent — Existing customers with whom the commercial agent has significantly increased the volume of business — One-off commission payments)