I2 1760 then AV 2506 at Madrid
Seville → Madrid → Lisbon
Timetable, Madrid time
20:15I2 1760 from Seville at the gatealso IB 1760, AA 8750
18:00AV 2506 to Lisbon leaves the gatealso LO 4763, EK 4859, AD 7273, S4 8963
21 h 45 apart on the timetable, overnight
AV 2506 leaves 21 h 45 after I2 1760 arrives on the timetable: more than half a day, so not a connection we count.