DL 859 then DL 116 at Salt Lake City
Boston → Salt Lake City → Oklahoma City
Timetable, Salt Lake City time
09:35DL 859 from Boston at the gate
09:31DL 116 to Oklahoma City leaves the gate
23 h 56 apart on the timetable, overnight
DL 116 leaves 23 h 56 after DL 859 arrives on the timetable: more than half a day, so not a connection we count.