The here-implemented FEH protocol was additionally compared to TDDFT calculations for the same set of BChl-like dimers. The corresponding electronic couplings were computed via the approach by Menucci and coworkers 55,56 implemented in the Gaussian16 package, based on calculations for each fragment that used the CAM-B3LYP functional 58 , used previously to compute Q y excitation energies and dipole strengths , and the 6-31G(d) basis set.