The article addresses the issues posed, both at the normative and at the enforcement level, by the interplay between competition law and data protection law, in light of the recent judgment of the Court of Justice in the Meta Platforms v. Bundeskartellamt case. The judgment innovates the interpretation of the rules composing the two normative domains, marking a shift from separateness to a logic of complementarity. Nonetheless, while easing the terms of the complex interaction between the two sets of rules and principles, the judgments leaves some questions, in terms of administrative cooperation among the competent enforcement authorities, unanswered. The latter are framed by the Article in terms of missing steps in the way forward, which, also in light of recent developments in EU law (e.g. DMA, DSA, AI Act and Data Act), seems to be a steep one.