UX 16 then UX 23 at Madrid
La Mesa → Madrid → Asuncion
Timetable, Madrid time
05:00UX 16 from La Mesa at the gate
23:45UX 23 to Asuncion leaves the gate
18 h 45 apart on the timetable
UX 23 leaves 18 h 45 after UX 16 arrives on the timetable: more than half a day, so not a connection we count.