The best results are obtained from the SCAN functional, whose MAE at the ∆SCF level is 0.2 eV with respect to experiment, in accord with previous studies. This is considerably better than the performance of the SRC1-r1 functional (MAE = 1.5 eV), which is notable since SRC1-r1 was specifically parameterized for Kedge excitation energies computed using time-dependent (TD-)DFT, although not specifically for CEBEs. Ionization energies may present a more rigorous test in that there is less opportunity for cancellation of selfinteraction between initial and final state, since those two states have a different number of electrons in the case of a CEBE. It is interesting to note that the ∆SCF errors obtained using SCAN0 are slightly larger (MAE = 0.3 eV) as compared to the semilocal SCAN functional, and are closer to the B3LYP results. As compared to B3LYP or SCAN0, the BH&HLYP functional contains a larger fraction of HFX and also exhibits notably larger ∆SCF errors (MAE = 0.7 eV).