Chemo-dynamical characterisation of the young accreted candidate sample selected having eccentricity > 0.7 and R_APO > 10 kpc (see the text for details). The sample is colour-coded by age in panels a and c and is shown in fuchsia in panels b and d. YAR giants stars having [Fe/H]<  − 0.8 dex are represented in black in the panels b and d. The under-plotted distribution in the [α/Fe]−[Fe/H] plane represents the red giants reference population in APOGEE DR17, while in the HRD, the underlying comparison sample is made of thick disc stars stars having [Fe/H]<  − 0.8 dex.