SN 3598 then DS 1530 at Brussels
Marseille → Brussels → Geneva
Timetable, Brussels time
13:45SN 3598 from Marseille at the gate
13:25DS 1530 to Geneva leaves the gate
23 h 40 apart on the timetable, overnight
DS 1530 leaves 23 h 40 after SN 3598 arrives on the timetable: more than half a day, so not a connection we count.