AA 126 then FR 3614 at Madrid
Chicago → Madrid → Prague
Timetable, Madrid time
09:25AA 126 from Chicago at the gatealso AY 1638, BA 4481
06:10FR 3614 to Prague leaves the gate
20 h 45 apart on the timetable, overnight
FR 3614 leaves 20 h 45 after AA 126 arrives on the timetable: more than half a day, so not a connection we count.