Colour-composite images from the DESI Legacy Imaging Surveys of the RC non-detected CHILLING sample, showing more compact emission, with overlaid 2.1 GHz ATCA radio emission contours starting at 3σ and increasing by a factor of $\sqrt{2}$. The scale in the top left corner is calculated using the distance to the source. The beam is shown in the bottom left corner. The noise level σ_2.1 GHz can be taken from Table 3.