FR 2437 then IB 363 at Madrid
Rome → Madrid → Dallas-Fort Worth
Timetable, Madrid time
09:00FR 2437 from Rome at the gate
00:55IB 363 to Dallas-Fort Worth leaves the gate
15 h 55 apart on the timetable, overnight
IB 363 leaves 15 h 55 after FR 2437 arrives on the timetable: more than half a day, so not a connection we count.