AA 3639 then AA 1683 at DFW
Dayton → Dallas-Fort Worth → Salt Lake City
Timetable, Dallas-Fort Worth time
08:01AA 3639 from Dayton at the gate
20:06AA 1683 to Salt Lake City leaves the gate
12 h 05 apart on the timetable
AA 1683 leaves 12 h 05 after AA 3639 arrives on the timetable: more than half a day, so not a connection we count.