U2 7643 then BA 713 at Zurich
Lisbon → Zurich → London Heathrow
Timetable, Zurich time
20:30U2 7643 from Lisbon at the gate
12:40BA 713 to London Heathrow leaves the gate
16 h 10 apart on the timetable, overnight
BA 713 leaves 16 h 10 after U2 7643 arrives on the timetable: more than half a day, so not a connection we count.