AGN bolometric luminosity as a function of the outflow velocity, v_out for our sample (back filled points) and the comparison samples (see legend in the upper left). To distinguish them from the rest of the comparison sample, the markers of the two ULIRGs hosting a compact radio source have a black edge colour. The black dashed line marks a scaling, as shown in Fig. 2 of Fiore et al. (2017), and can be used as a reference for the scaling found in their paper considering molecular and warm ionised gas outflows only.