UA 2842 then AA 3636 at DFW
San Francisco → Dallas-Fort Worth → Cedar Rapids
Timetable, Dallas-Fort Worth time
15:49UA 2842 from San Francisco at the gate
15:40AA 3636 to Cedar Rapids leaves the gate
23 h 51 apart on the timetable, overnight
AA 3636 leaves 23 h 51 after UA 2842 arrives on the timetable: more than half a day, so not a connection we count.