LG 5437 then DY 3658 at Copenhagen
Luxembourg → Copenhagen → Barcelona
Timetable, Copenhagen time
15:05LG 5437 from Luxembourg at the gate
11:10DY 3658 to Barcelona leaves the gate
20 h 05 apart on the timetable, overnight
DY 3658 leaves 20 h 05 after LG 5437 arrives on the timetable: more than half a day, so not a connection we count.