UCCSD has an MAD of 0.12 eV based on the results taken from Ref. 38, which is the same as for the best three DFAs, however, it seems to have a more systematic blueshift due to an MD with exactly the same value. The top-three DFAs all have MDs closer to zero and therefore outperform CCSD on average. Therefore, we warn against using CCSD or approximate versions of it as a reference for benchmarking TD(A)-DHDFs.