FR 6597 then FR 4370 at Manchester
Barcelona → Manchester → Seville
Timetable, Manchester time
19:50FR 6597 from Barcelona at the gate
16:45FR 4370 to Seville leaves the gate
20 h 55 apart on the timetable, overnight
FR 4370 leaves 20 h 55 after FR 6597 arrives on the timetable: more than half a day, so not a connection we count.