Comparison of the rotational broadening AMBRE/FEROS V_broad with the DR17 APOGEE measurements of Abdurro’uf et al. (2022). The black-dashed line denotes the one-to-one relation for visual reference. Left-pointing triangles refer to the AMBRE upper limits. The colour coding refers to the APOGEE relative uncertainties but most stars have overly small APOGEE uncertainties to see their error bars. See the text for a discussion about the bias and dispersion associated to this comparison.