DL 436 then AA 1607 at DFW
Atlanta → Dallas-Fort Worth → Cleveland
Timetable, Dallas-Fort Worth time
18:54DL 436 from Atlanta at the gate
16:00AA 1607 to Cleveland leaves the gate
21 h 06 apart on the timetable, overnight
AA 1607 leaves 21 h 06 after DL 436 arrives on the timetable: more than half a day, so not a connection we count.