  Through the systematic inspection of graphs in the framework of lightcone
perturbation theory, we demonstrate that an identity between the evolution of
pT-broadening amplitudes with the energy and the evolution of forward
scattering amplitudes of color dipoles off nuclei holds at next-to-leading
order accuracy. In the general case, the relation is not a graph-by-graph
correspondence, neither does it hold strictly speaking for definite values of
the momenta: Instead, it relates classes of graphs of similar topologies, and
in some cases, the matching requires an analytical continuation in the
appropriate longitudinal momentum variable. We check that the same kind of
relation is also true at next-to-leading order between amplitudes for the
production of dijets and quadrupole forward amplitudes.
