Cold molecular gas depletion time, t_dep, as a function of the self-gravity of the regions (parameter b) at 90 pc scales for the dual (top left) and the non-dual galaxies (top right). The orange and magenta circles show the median t_dep in bins of b. The points and error bars indicate the mean absolute deviation of the points in the bins. The values of these parameters estimated in M51 (Leroy+17) are shown in purple, and the open black rectangle represents the range of values in NGC 628 (Kreckel+18). The black and blue circles correspond to regions in the high- and low-N regimes, respectively, for the four dual objects (bottom row). The red and brown circles are the mean values of the regions in high- and low-N regimes, respectively. The error bars indicate the mean absolute deviation of the regions in high- and low-N regimes, respectively.