AZ 76 then FR 9015 at Barcelona
Rome → Barcelona → London Stansted
Timetable, Barcelona time
15:55AZ 76 from Rome at the gate
12:20FR 9015 to London Stansted leaves the gate
20 h 25 apart on the timetable, overnight
FR 9015 leaves 20 h 25 after AZ 76 arrives on the timetable: more than half a day, so not a connection we count.