Top: ratio of the median satellite distance to the halo centre as a function of halo mass between a suite of zoom-in hydrodynamic simulations and their dark-matter-only counterparts. The dark-matter-only haloes are selected with a V_peak cut equivalent to a number density of n_den = 0.1  h³ Mpc⁻³ in the full MTNG-DMO box. The zoom-in with the same physical model as MTNG is shown as a black dashed line. Orange lines show runs with varied galaxy-formation parameters; lighter (darker) colours correspond to lower (higher) values of WindEnergyIn1e51erg, the parameter that correlates best with the amplitude of the effect. Bottom: same as the top panel, but for the satellite velocity dispersion.