AA 3751 then UA 1673 at O'Hare
White Plains → Chicago → Dallas-Fort Worth
Timetable, Chicago time
08:00AA 3751 from White Plains at the gate
20:22UA 1673 to Dallas-Fort Worth leaves the gate
12 h 22 apart on the timetable
UA 1673 leaves 12 h 22 after AA 3751 arrives on the timetable: more than half a day, so not a connection we count.