SN 3668 then EC 1746 at Brussels
Toulouse → Brussels → Nice
Timetable, Brussels time
14:00SN 3668 from Toulouse at the gate
13:30EC 1746 to Nice leaves the gate
23 h 30 apart on the timetable, overnight
EC 1746 leaves 23 h 30 after SN 3668 arrives on the timetable: more than half a day, so not a connection we count.