Evolution of the DP fraction of major-merger simulations after the final coalescence observed at z = 0.05. We identify the snapshot in each simulation where the distance between the two galaxies remains below the half mass radius of the first galaxy for the rest of the simulation. We use this snapshot as reference point and show the time starting 250 Myr before this snapshot on the x-axis. On the y-axis, we show the DP fraction f_DP. On the top (resp. bottom) panel, we show gSb + gSb (resp. gSa + gSa) simulations. We mark the time before the final coalescence in grey. We mark simulations with an inclination of 0°, 45° and 90° of the second disc (see Fig. 10) with blue, orange and pink lines, respectively. Mergers with direct (resp. retrograde) orbit are presented by solid (resp. dashed) lines.