LH 1818 then FR 12 at Barcelona
Munich → Barcelona → Vienna
Timetable, Barcelona time
19:30LH 1818 from Munich at the gate
11:15FR 12 to Vienna leaves the gate
15 h 45 apart on the timetable, overnight
FR 12 leaves 15 h 45 after LH 1818 arrives on the timetable: more than half a day, so not a connection we count.