  The sensitivity of Density Functional Theory plus Dynamical Mean Field Theory
calculations to different constructions of the correlated orbitals is
investigated via a detailed comparison of results obtained for the quantum
material NdNiO$_2$ using different Wannier and projector methods to define the
correlation problem. Using the same interaction parameters we find that the
different methods produce different results for the orbital and band basis mass
enhancements and for the orbital occupancies, with differing implications
regarding the importance of multiorbital effects and charge transfer physics.
Using interaction parameters derived from cRPA enhances the difference in
results. For the isostructural cuprate CaCuO$_2$, the different methods give
quantitatively different mass enhancements but still result in the same
qualitative physics.
