LH 1810 then IB 5480 at Barcelona
Munich → Barcelona → Nantes
Timetable, Barcelona time
11:00LH 1810 from Munich at the gate
10:15IB 5480 to Nantes leaves the gatealso LL 5480, VY 8140
23 h 15 apart on the timetable, overnight
IB 5480 leaves 23 h 15 after LH 1810 arrives on the timetable: more than half a day, so not a connection we count.