PU 502 then ET 1427 at Madrid
Buenos Aires → Madrid → Lisbon
Timetable, Madrid time
15:45PU 502 from Buenos Aires at the gate
10:25ET 1427 to Lisbon leaves the gatealso DL 6743, AM 6914, AD 7854
18 h 40 apart on the timetable, overnight
ET 1427 leaves 18 h 40 after PU 502 arrives on the timetable: more than half a day, so not a connection we count.