FR 2767 then FR 5997 at Madrid
Prague → Madrid → London Stansted
Timetable, Madrid time
17:45FR 2767 from Prague at the gate
17:40FR 5997 to London Stansted leaves the gate
23 h 55 apart on the timetable, overnight
FR 5997 leaves 23 h 55 after FR 2767 arrives on the timetable: more than half a day, so not a connection we count.