Top: median (solid lines) and 16th–84th percentile region (shaded area) of the mean radial distance between satellite galaxies and the halo centre as a function of halo mass. Results from the MTNG-DMO simulation are shown in black, and those from the hydrodynamic MTNG run in orange. Subhaloes were selected according to their V_peak for a number density of n_den = 0.0316 h³ Mpc⁻³ in MTNG-DMO, and the corresponding matched galaxies in MTNG were identified following the procedure described in Section 2.2. Distances are shown as a function of the MTNG-DMO halo masses. The black dashed line represents the value of one virial radius r_200c. Bottom: Median (solid lines) and 16th–84th percentile region (shaded area) of the ratio of mean distances between matched haloes in the MTNG and MTNG-DMO simulations. The orange solid line and shaded area correspond to the galaxy sample with number density 0.0316 h³ Mpc⁻³ (same as in the top panel), while the dashed and dotted lines represent galaxy samples with number densities of 0.01 and 0.00316 h³ Mpc⁻³. Only the subhaloes successfully matched between the two simulations are shown here.