The contribution from the σ-system is small, but not absent. This highlights one of the advantages of our method as the current density from the σ-system is no longer masked by the electronic transmission through the π-system. As we know from systems where there is destructive quantum interference in the π-system, such as meta-substituted benzene or cross-conjugated polyenes, 54,57-59 there can still be notable electronic transmission through the σsystem. This partitioning can help clarify how the current flows through molecules regardless of which MOs dominate the overall picture.