DL 2305 then AA 2289 at DFW
Boston → Dallas-Fort Worth → St Louis
Timetable, Dallas-Fort Worth time
23:03DL 2305 from Boston at the gate
21:45AA 2289 to St Louis leaves the gate
22 h 42 apart on the timetable, overnight
AA 2289 leaves 22 h 42 after DL 2305 arrives on the timetable: more than half a day, so not a connection we count.