FR 6596 then FR 9015 at Barcelona
Manchester → Barcelona → London Stansted
Timetable, Barcelona time
23:40FR 6596 from Manchester at the gate
18:05FR 9015 to London Stansted leaves the gate
18 h 25 apart on the timetable, overnight
FR 9015 leaves 18 h 25 after FR 6596 arrives on the timetable: more than half a day, so not a connection we count.