LX 177 then U2 7644 at Zurich
Singapore → Zurich → Lisbon
Timetable, Zurich time
06:10LX 177 from Singapore at the gate
21:20U2 7644 to Lisbon leaves the gate
15 h 10 apart on the timetable
U2 7644 leaves 15 h 10 after LX 177 arrives on the timetable: more than half a day, so not a connection we count.