UA 616 then BA 5602 at San Francisco
Denver → San Francisco → Dallas-Fort Worth
Timetable, San Francisco time
11:42UA 616 from Denver at the gatealso AC 5189, VA 8348, NZ 9067
11:20BA 5602 to Dallas-Fort Worth leaves the gate
23 h 38 apart on the timetable, overnight
BA 5602 leaves 23 h 38 after UA 616 arrives on the timetable: more than half a day, so not a connection we count.