Distribution in metallicity versus azimuthal velocity for 446 754 stars in our sample that were likely born in situ according the selection in orbital energy shown by BK22 in their Fig. 1. The thick red line traces the median V_Φ of the distribution, while the thinner lines trace the 5th and 95th percentiles. The vertical grey lines mark the transition points suggested by BK22, [Fe/H] = −0.3 and [Fe/H] = −0.9, as well as the lower limit of the metallicity range in which the same trend is discussed in BK22: [Fe/H] = −1.5 (see their Fig. 4).