FR 6596 then BA 8072 at Barcelona
Manchester → Barcelona → London Gatwick
Timetable, Barcelona time
23:40FR 6596 from Manchester at the gate
14:55BA 8072 to London Gatwick leaves the gate
15 h 15 apart on the timetable, overnight
BA 8072 leaves 15 h 15 after FR 6596 arrives on the timetable: more than half a day, so not a connection we count.