UA 367 then CZ 1639 at San Francisco
Washington → San Francisco → Miami
Timetable, San Francisco time
01:29UA 367 from Washington at the gatealso LH 7530, VA 8388, NZ 9181
23:47CZ 1639 to Miami leaves the gatealso AA 1844, PR 3934, QF 4121, G3 6252, IB 8568
22 h 18 apart on the timetable
CZ 1639 leaves 22 h 18 after UA 367 arrives on the timetable: more than half a day, so not a connection we count.