The performed TDA computations are compared with TDA and DFT/MRCI reference results of Ref. , with the latter representing an approach combining KS orbitals with restricted multi-reference configuration interaction (MRCI) expansions. For TDA spin-orbit couplings, Dinkelbach et al. were also relying on the AMEW ansatz and thus their TDA reference results are based on comparable wave functions. In contrast to the current implementation, the reference results are however based on an atomic meanfield approximation of the Breit-Pauli Hamiltonian, thus including, next to spin-same also spin-other-orbit interactions.