(a) and (b) The relative weights and the rotation curves of the main (blue points) and CR (green points) components from I. Y. Katkov et al. (2024). r₁ and r₂ are the same radius in Figure 1. (c) The rotation curves of CO and Hα. (d) The rotation-velocity difference between CO and Hα versus the radial mean of ﹩\sqrt{{\sigma }_{{\rm{H}}\alpha }^{2}-{\sigma }_{{\rm{C}}{\rm{O}}}^{2}}﹩. The orange and blue points represent the ALMaQUEST kinematic subsample (KSS) and EDGE-CALIFA KSS from Y.-C. Su et al. (2022).