DL 870 then AA 2878 at DFW
Seattle → Dallas-Fort Worth → Charlotte
Timetable, Dallas-Fort Worth time
23:53DL 870 from Seattle at the gate
11:55AA 2878 to Charlotte leaves the gate
12 h 02 apart on the timetable, overnight
AA 2878 leaves 12 h 02 after DL 870 arrives on the timetable: more than half a day, so not a connection we count.