F9 1441 then UA 441 at O'Hare
Atlanta → Chicago → Dallas-Fort Worth
Timetable, Chicago time
12:51F9 1441 from Atlanta at the gate
11:47UA 441 to Dallas-Fort Worth leaves the gate
22 h 56 apart on the timetable, overnight
UA 441 leaves 22 h 56 after F9 1441 arrives on the timetable: more than half a day, so not a connection we count.