AA 4339 then DL 3826 at Detroit
New York LaGuardia → Detroit → Milwaukee
Timetable, Detroit time
13:24AA 4339 from New York LaGuardia at the gate
12:25DL 3826 to Milwaukee leaves the gate
23 h 01 apart on the timetable, overnight
DL 3826 leaves 23 h 01 after AA 4339 arrives on the timetable: more than half a day, so not a connection we count.