AZ 74 then FR 9811 at Barcelona
Rome → Barcelona → London Stansted
Timetable, Barcelona time
10:50AZ 74 from Rome at the gate
07:55FR 9811 to London Stansted leaves the gate
21 h 05 apart on the timetable, overnight
FR 9811 leaves 21 h 05 after AZ 74 arrives on the timetable: more than half a day, so not a connection we count.