U2 6682 then IB 536 at Lisbon
Birmingham (Alabama) → Lisbon → Madrid
Timetable, Lisbon time
19:15U2 6682 from Birmingham (Alabama) at the gate
18:45IB 536 to Madrid leaves the gate
23 h 30 apart on the timetable, overnight
IB 536 leaves 23 h 30 after U2 6682 arrives on the timetable: more than half a day, so not a connection we count.