LL 5280 then LA 5794 at Barcelona
Mahón → Barcelona → Vigo
Timetable, Barcelona time
18:40LL 5280 from Mahón at the gate
18:15LA 5794 to Vigo leaves the gate
23 h 35 apart on the timetable, overnight
LA 5794 leaves 23 h 35 after LL 5280 arrives on the timetable: more than half a day, so not a connection we count.