DL 2305 then AA 446 at DFW
Boston → Dallas-Fort Worth → San Francisco
Timetable, Dallas-Fort Worth time
23:03DL 2305 from Boston at the gate
22:48AA 446 to San Francisco leaves the gate
23 h 45 apart on the timetable, overnight
AA 446 leaves 23 h 45 after DL 2305 arrives on the timetable: more than half a day, so not a connection we count.