Dependence of the relation between M_{*, halo(r < 2 Re)} and M_*, ExSitu on the ex situ fraction of the hot inner stellar halo, f_{ExSitu, halo}. We split the hot inner stellar halo into two parts: M_{*, halo, ExSitu} in the top panels and M_{*, halo, InSitu} in the bottom. Here we show results for TNG50 in subsamples g6 and g7, color coded by f_{ExSitu, halo}. The plus symbols mark the galaxies with f_{ExSitu, halo} < 0.1. In g6, both M_{*, halo, ExSitu} and M_{*, halo, InSitu} are tightly correlated with the total ex situ stellar mass. In g7, M_{*, halo, ExSitu} shows a similarly strong correlation with the total ex situ stellar mass; however, the trend with M_{*, halo, InSitu} is weak with large scatter caused by the galaxies with low ex situ fractions of the hot inner stellar halo.