EC 2987 then DS 1530 at Brussels
Rome → Brussels → Geneva
Timetable, Brussels time
20:25EC 2987 from Rome at the gate
13:25DS 1530 to Geneva leaves the gate
17 h apart on the timetable, overnight
DS 1530 leaves 17 h after EC 2987 arrives on the timetable: more than half a day, so not a connection we count.