FR 3977 then FR 6559 at Barcelona
Dublin → Barcelona → Liverpool
Timetable, Barcelona time
19:05FR 3977 from Dublin at the gate
12:50FR 6559 to Liverpool leaves the gate
17 h 45 apart on the timetable, overnight
FR 6559 leaves 17 h 45 after FR 3977 arrives on the timetable: more than half a day, so not a connection we count.