EI 3618 then EI 3329 at Manchester
Belfast City → Manchester → Dublin
Timetable, Manchester time
19:25EI 3618 from Belfast City at the gate
16:05EI 3329 to Dublin leaves the gate
20 h 40 apart on the timetable, overnight
EI 3329 leaves 20 h 40 after EI 3618 arrives on the timetable: more than half a day, so not a connection we count.