Detachment mass ratio as function of initial mass ratio for a selection of our results. The three panels refer to three different grids for target mass ratio q_r as indicated by the dashed red line, which also corresponds to a detachment period of P_r = P_today, by construction. Different MT efficiencies are color-coded according to the color bar, and the scatter points mark case A (x marker) and case B (triangle marker) MT. The systems have total mass m_tot, r = 4.28 M_⊙ (median for HR6819) at q_r. In the first panel, we also show the detachment ratios corresponding to periods of 60 and 90 days in gray, as a reference.