BA 458 then FR 3614 at Madrid
London Heathrow → Madrid → Prague
Timetable, Madrid time
11:00BA 458 from London Heathrow at the gate
06:10FR 3614 to Prague leaves the gate
19 h 10 apart on the timetable, overnight
FR 3614 leaves 19 h 10 after BA 458 arrives on the timetable: more than half a day, so not a connection we count.