FIR (42–122.5 μm) luminosity vs. CO(6-5) luminosity for the two sources observed in Band 3 in our sample (J2053+0047, RQ, grey penthagon; J2228+0110, RL, pink square), compared to a sample of RQ z > 5 quasars in the literature (grey circles; see text for references). Measurements and limits for the RL quasar PSO352-15 are also shown (Rojas-Ruiz et al. 2021; dark pink circle). The relations measured for galaxies + AGN, and only AGN, at lower−z, in Kamenetzky et al. (2016) are also reported (dashed and dot-dashed black lines). The sources in this work are consistent with values in the literature, particularly given the relatively loose limits on both the IR and CO(6-5) emission line luminosities.