Comment on "Consequences of the single-pair measurement of the Bell parameter"

Abstract

In a recent article [Phys. Rev. A 111, 022204 (2025)], Genovese and Piacentini analyzed recent experiments measuring what they call "the entire Bell-CHSH parameter". They claimed those experiments may have implications for interpreting loophole-fee tests of the Bell-CHSH inequality. We explain that the Bell-CHSH inequality is not based on the entire Bell parameter, so these experiments are unrelated to their empirical tests and cannot close eventual loopholes that still might persist. We point out that the physical meaning of these new experiments measuring the entire Bell parameter could be interpreted differently.

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