DL 905 then DL 1554 at Atlanta
Salt Lake City → Atlanta → Washington
Timetable, Atlanta time
23:00DL 905 from Salt Lake City at the gate
15:27DL 1554 to Washington leaves the gate
16 h 27 apart on the timetable, overnight
DL 1554 leaves 16 h 27 after DL 905 arrives on the timetable: more than half a day, so not a connection we count.