  Extracting single photoionization time delays associated with atomic (or
molecular) species from attosecond time scale two-photon experiments usually
relies on the theoretical description of continuum-continuum transitions. The
available models for those processes predict a universal phase contribution,
independent of the angular quantum numbers of final states. However, a recent
experimental-theoretical study [Fuchs, \emph{et al.} Optica 7, 154 (2020)]
determined a sizable time delay dependence on the angular momentum of
near-threshold photoelectrons. In this study, we present an analytical model
for the two-photon two-color transition matrix amplitudes that reproduces the
phase dependence on the angular quantum number of final states. Finally, we
show that our analytical model can also describe the generalized Fano's
propensity rules [Busto, \emph{et al.} Phys. Rev. Lett. 123, 133201 (2019)] for
laser-assisted photoionization.
