Figure shows the evolution of the effective hole mass, which marks the VBM, for small twist angles towards both high-symmetry stackings. Only the results obtained at the DFTB level are shown because the TB fit does not correctly reproduce the band curvature at the Γ point (see Table ), even though qualitative trends are reproduced. The effective masses are isotropic in the two lateral directions, as seen in the almost identical values along the two high-symmetry paths in the Brillouin zone. When approaching the equilibrium BL, the effective hole masses quickly go to infinity, characterizing the bands as flat and the holes as quasi-immobile for twist angles of about 58°. Contrary, the effective masses only slowly increase when approaching the eclipsed structure, where the effective hole mass is still around the electron mass for a twist angle as small as 1°. . An equivalent version of (c), plotted as function of the moiré cell's lattice