Projected angular momentum dispersion σ_Lz profiles for both populations in the N2M model (panel a) and the N05M model (panel b) at 12 Gyr. The vertical grey solid lines in panels a and b represent the difference in σ_Lz between the populations at R = 2R_h. Panel c shows the time evolution of σ_Lz difference at 2R_h; the closer this value is to zero, the closer the two populations are to kinematically mixing.