FR 3977 then LH 1813 at Barcelona
Dublin → Barcelona → Munich
Timetable, Barcelona time
21:10FR 3977 from Dublin at the gate
15:20LH 1813 to Munich leaves the gate
18 h 10 apart on the timetable, overnight
LH 1813 leaves 18 h 10 after FR 3977 arrives on the timetable: more than half a day, so not a connection we count.