Final CAI abundance profile after 5 Myr with variations of Saturn’s location of formation a_planet. The planet’s Hill radius shrinks when it moves in towards smaller heliocentric distances, reducing the width of the resulting planet gap. It then becomes easier for turbulent motions in the gas to propel CAIs through the gap into the region between Jupiter and Saturn. If Saturn formed at 5.6 AU (at least for the fixed value of α_peak = 10⁻⁴), it fails in trapping many CAIs at all, and the result greatly resembles the one-planet case.