XZ 2426 then BA 559 at Fiumicino
Genova → Rome → London Heathrow
Timetable, Rome time
20:00XZ 2426 from Genova at the gate
19:05BA 559 to London Heathrow leaves the gate
23 h 05 apart on the timetable, overnight
BA 559 leaves 23 h 05 after XZ 2426 arrives on the timetable: more than half a day, so not a connection we count.