DL 2305 then AA 1371 at DFW
Boston → Dallas-Fort Worth → Des Moines
Timetable, Dallas-Fort Worth time
23:03DL 2305 from Boston at the gate
21:35AA 1371 to Des Moines leaves the gate
22 h 32 apart on the timetable, overnight
AA 1371 leaves 22 h 32 after DL 2305 arrives on the timetable: more than half a day, so not a connection we count.