AZ 76 then FR 8217 at Barcelona
Rome → Barcelona → London Stansted
Timetable, Barcelona time
15:55AZ 76 from Rome at the gate
10:30FR 8217 to London Stansted leaves the gate
18 h 35 apart on the timetable, overnight
FR 8217 leaves 18 h 35 after AZ 76 arrives on the timetable: more than half a day, so not a connection we count.