Post-processing stars and dark matter. Left: ratio of present-day to infall dark matter mass as a function of time since infall, colour-coded by total subhalo mass at infall. Right: ratio of present-day to infall stellar mass as a function of time since infall, colour-coded by infall gas-to-stellar mass ratio. In each case the quantity shown in the colour bar is the one that maximizes differences in behaviour. Line styles are as in Fig. 7.