FR 6596 then FR 6874 at Barcelona
Manchester → Barcelona → Dublin
Timetable, Barcelona time
23:40FR 6596 from Manchester at the gate
19:55FR 6874 to Dublin leaves the gate
20 h 15 apart on the timetable, overnight
FR 6874 leaves 20 h 15 after FR 6596 arrives on the timetable: more than half a day, so not a connection we count.