  We study the impact of Hund's-rule coupling on orbital excitations, as e.g.
measured in inelastic resonant x-ray scattering. We find that the
interpretation in terms of spin-orbit separation, which has been derived for
one-dimensional systems without Hund's rule, remains robust in its presence.
Depending on whether or not the orbital excitation includes a spin excitation,
Hund's rule leads to an attractive or repulsive interaction between spinon and
orbiton. Attraction and repulsion leave clear signatures through a transfer of
spectral weight to the lower resp. upper edge of the spectrum.
