Opinion of Advocate General Campos Sánchez-Bordona delivered on 25 March 2021.#AS „LatRailNet” and „Latvijas dzelzceļš” VAS v Valsts dzelzceļa administrācija.#Request for a preliminary ruling from the Administratīvā rajona tiesa.#Reference for a preliminary ruling – Rail transport – Directive 2012/34/EU – Articles 32 and 56 – Railway infrastructure charging – Independence of the infrastructure manager – Functions of the regulatory body – Concept of ‘optimal competitiveness of rail market segments’ – Exclusive right on a rail segment – Public service operator.#Case C-144/20.