U2 7644 then IB 1146 at Lisbon
Zurich → Lisbon → Madrid
Timetable, Lisbon time
16:50U2 7644 from Zurich at the gate
20:45IB 1146 to Madrid leaves the gate
3 h 55 apart on the timetable
The last days
U2 7644 and IB 1146 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.