LA 5745 then IB 5856 at Barcelona
Rome → Barcelona → Manchester
Timetable, Barcelona time
01:25LA 5745 from Rome at the gate
17:10IB 5856 to Manchester leaves the gatealso LL 5856, VY 7756, BA 8106
15 h 45 apart on the timetable
IB 5856 leaves 15 h 45 after LA 5745 arrives on the timetable: more than half a day, so not a connection we count.