DL 5603 then AA 2760 at Boston
Madison → Boston → Los Angeles
Timetable, Boston time
18:52DL 5603 from Madison at the gate
18:45AA 2760 to Los Angeles leaves the gate
23 h 53 apart on the timetable, overnight
AA 2760 leaves 23 h 53 after DL 5603 arrives on the timetable: more than half a day, so not a connection we count.