CI 5346 then DL 1554 at Atlanta
San Francisco → Atlanta → Washington
Timetable, Atlanta time
21:48CI 5346 from San Francisco at the gate
15:27DL 1554 to Washington leaves the gate
17 h 39 apart on the timetable, overnight
DL 1554 leaves 17 h 39 after CI 5346 arrives on the timetable: more than half a day, so not a connection we count.