EC 3749 then LH 1813 at Barcelona
Milan → Barcelona → Munich
Timetable, Barcelona time
21:30EC 3749 from Milan at the gate
15:20LH 1813 to Munich leaves the gate
17 h 50 apart on the timetable, overnight
LH 1813 leaves 17 h 50 after EC 3749 arrives on the timetable: more than half a day, so not a connection we count.