Gaia DR3 RVS properties of a comparison sample of 35,629 stars for HD 7977: rv_renormalised_gof versus rv_amplitude_robust, colour-coded with rv_chisq_pvalue. The sources have comparable spectral types (dwarfs with a template effective temperature within 500 K) and similar brightness as HD 7977 (G_RVS-band magnitude within 1 magnitude). HD 7977 is indicated with a cross-hair. It falls clearly in the domain where the radial velocity time series is not constant (rv_chisq_pvalue < 1E-2) and also the normalised goodness of fit is excessively large (compared to unity).