U2 2323 then FR 6597 at Barcelona
London Luton → Barcelona → Manchester
Timetable, Barcelona time
10:00U2 2323 from London Luton at the gate
22:30FR 6597 to Manchester leaves the gate
12 h 30 apart on the timetable
FR 6597 leaves 12 h 30 after U2 2323 arrives on the timetable: more than half a day, so not a connection we count.