Why do Higgs and top masses almost multiply to Z mass?

The relation M_H² ≈ M_Z × M_t holds to within 1.4σ using 2025 PDG values, suggesting a possible hidden symmetry. But when physicists redo the calculation using running couplings at NNLO precision, the relation breaks down, predicting a Higgs 2 GeV lighter than observed. This mismatch hints that any underlying symmetry must operate at a different scale or include a specific quantum correction factor.