Modified from Fig. 9 of Tamhane et al. (2022), we show the relation between the kinetic power of flows (from cold molecular gas) and the mechanical power for BCGs together with AGN (composite and starburst), taken from Fluetsch et al. (2019). For the AGN, the x-axis represents the bolometric AGN luminosity. PKS 0023−26 and a few radio AGN (see Sect. 4.3) where outflows of cold molecular gas are detected were added to the plot and are indicated with large stars (see Sect. 4.1 for details on PKS 0023−26). The black lines represent flow powers of 5% (dashed), 0.5% (dash–dotted), and 0.05% (dotted) that of the bolometric AGN luminosity.