EC 2987 then EC 1746 at Brussels
Rome → Brussels → Nice
Timetable, Brussels time
20:20EC 2987 from Rome at the gate
14:05EC 1746 to Nice leaves the gate
17 h 45 apart on the timetable, overnight
EC 1746 leaves 17 h 45 after EC 2987 arrives on the timetable: more than half a day, so not a connection we count.