DL 939 then DL 4986 at JFK
Los Angeles → New York → Milwaukee
Timetable, New York time
20:59DL 939 from Los Angeles at the gate
18:45DL 4986 to Milwaukee leaves the gate
21 h 46 apart on the timetable, overnight
DL 4986 leaves 21 h 46 after DL 939 arrives on the timetable: more than half a day, so not a connection we count.