U2 704 then FR 6596 at Manchester
Belfast International → Manchester → Barcelona
Timetable, Manchester time
17:55U2 704 from Belfast International at the gate
09:50FR 6596 to Barcelona leaves the gate
15 h 55 apart on the timetable, overnight
FR 6596 leaves 15 h 55 after U2 704 arrives on the timetable: more than half a day, so not a connection we count.