UX 42 then FR 2766 at Madrid
Buenos Aires → Madrid → Prague
Timetable, Madrid time
05:10UX 42 from Buenos Aires at the gate
18:20FR 2766 to Prague leaves the gate
13 h 10 apart on the timetable
FR 2766 leaves 13 h 10 after UX 42 arrives on the timetable: more than half a day, so not a connection we count.