PU 502 then CX 1751 at Madrid
Buenos Aires → Madrid → Buenos Aires
Timetable, Madrid time
15:45PU 502 from Buenos Aires at the gate
12:20CX 1751 to Buenos Aires leaves the gatealso BA 4255, AY 5375
20 h 35 apart on the timetable, overnight
CX 1751 leaves 20 h 35 after PU 502 arrives on the timetable: more than half a day, so not a connection we count.