IZ 335 then BA 553 at Fiumicino
Tel Aviv → Rome → London Heathrow
Timetable, Rome time
17:40IZ 335 from Tel Aviv at the gate
13:20BA 553 to London Heathrow leaves the gate
19 h 40 apart on the timetable, overnight
BA 553 leaves 19 h 40 after IZ 335 arrives on the timetable: more than half a day, so not a connection we count.