For the three geometries having 7 Å displacements in one or both lateral directions, we do obtain somewhat different results using different model systems. For the original (COF1) 2 model, these three structures exhibit similar energetics (with relative energies within ≈ 3 kcal/mol of one another), regardless of which density functional is used, but for larger models there is some variation in which of these AB-type geometries is most stable. That said, in the larger model systems these 7 Å-offset structures are significantly less stable as compared to the geometry with 1 Å offsets, by as much as 30-40 kcal/mol. Even without relaxing these larger structures, these observations strongly suggest that something close to a 1 Å lateral offset represents the global minimum structure for larger COF-1 models, at various levels of DFT that are known reasonably reliable for non-covalent interactions.