FR 2437 then UX 1015 at Madrid
Rome → Madrid → London Gatwick
Timetable, Madrid time
18:00FR 2437 from Rome at the gate
15:00UX 1015 to London Gatwick leaves the gate
21 h apart on the timetable, overnight
UX 1015 leaves 21 h after FR 2437 arrives on the timetable: more than half a day, so not a connection we count.