DL 8843 then DL 704 at Atlanta
Washington → Atlanta → Boise
Timetable, Atlanta time
02:39DL 8843 from Washington at the gate
19:21DL 704 to Boise leaves the gate
16 h 42 apart on the timetable
DL 704 leaves 16 h 42 after DL 8843 arrives on the timetable: more than half a day, so not a connection we count.