DL 51 then F9 4949 at Salt Lake City
London → Salt Lake City → Phoenix Sky Harbor
Timetable, Salt Lake City time
14:20DL 51 from London at the gate
13:01F9 4949 to Phoenix Sky Harbor leaves the gate
22 h 41 apart on the timetable, overnight
F9 4949 leaves 22 h 41 after DL 51 arrives on the timetable: more than half a day, so not a connection we count.