FR 270 then BA 8072 at Barcelona
Milan → Barcelona → London Gatwick
Timetable, Barcelona time
17:10FR 270 from Milan at the gate
14:55BA 8072 to London Gatwick leaves the gate
21 h 45 apart on the timetable, overnight
BA 8072 leaves 21 h 45 after FR 270 arrives on the timetable: more than half a day, so not a connection we count.