In Fig. , we compare the SF-BH&HLYP and LR-ωB97X/TDA minimum-energy intersection seams around MECP(C 2 C 3 ), by scanning the C 2 =C 3 twist angle. The two seams are quite similar in shape except that the slope of the potential surface is larger in the LR-ωB97X/TDA case, with an energy change that is ≈ 3 kcal/mol greater over the same range of the torsion angle. The distribution of torsion angles around C 2 =C 3 is plotted in Fig. (a) for the subset of activated trajectories that decay through MECP(C 2 C 3 ), and the distribution around C 1 -C 2 is plotted in Fig. . The similarities amongst these distributions provides further evidence that the trajectories produced by all three methods undergo the same reaction pathway. The fractions of cis photoproduct are 54% (SF-BH&HLYP), 53% (LR-ωB97X), and 47% (LR-ωB97X/TDA). The difference in τ e predicted by SF-BH&HLYP and LR-ωB97X may therefore be only a consequence of different CX topographies. Nevertheless, these similarities are borne out only by removing dissimilar trajectories from the data set. Left to its own devices, LR-TDDFT (with or without the TDA) predicts rather different dynamics as compared to SF-BH&HLYP.