22It is, nevertheless, necessary to examine whether that difference in treatment may be justified under Article 6(2) of Directive 2000/78. In that regard, it must be recalled that, even if, formally, the referring court has limited its question to the interpretation of Articles 2(1), 2(2)(a) and 6(1) of that directive, that does not prevent the Court from providing the referring court with a ruling on the interpretation of all EU law which may be of assistance to the referring court in adjudicating in the case pending before it, whether or not the referring court has referred to them in the wording of that question (judgments of 26 September 2013 in HK Danmark, C‑476/11, EU:C:2013:590, paragraph 56, and of 29 October 2015 in Nagy, C‑583/14, EU:C:2015:737, paragraph 20).
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