DL 653 then DL 2797 at Salt Lake City
Atlanta → Salt Lake City → San Antonio
Timetable, Salt Lake City time
19:59DL 653 from Atlanta at the gate
17:40DL 2797 to San Antonio leaves the gate
21 h 41 apart on the timetable, overnight
DL 2797 leaves 21 h 41 after DL 653 arrives on the timetable: more than half a day, so not a connection we count.