LH 978 then FR 3977 at Dublin
Frankfurt am Main → Dublin → Barcelona
Timetable, Dublin time
11:00LH 978 from Frankfurt am Main at the gate
07:40FR 3977 to Barcelona leaves the gate
20 h 40 apart on the timetable, overnight
FR 3977 leaves 20 h 40 after LH 978 arrives on the timetable: more than half a day, so not a connection we count.