IB 5939 then IB 5854 at Barcelona
Marseille → Barcelona → Manchester
Timetable, Barcelona time
15:30IB 5939 from Marseille at the gatealso LL 5939, VY 8133
11:15IB 5854 to Manchester leaves the gatealso LL 5854, VY 7754, BA 8104
19 h 45 apart on the timetable, overnight
IB 5854 leaves 19 h 45 after IB 5939 arrives on the timetable: more than half a day, so not a connection we count.