DL 3876 then UA 1233 at Denver
Austin → Denver → Newark
Timetable, Denver time
12:06DL 3876 from Austin at the gate
11:49UA 1233 to Newark leaves the gate
23 h 43 apart on the timetable, overnight
UA 1233 leaves 23 h 43 after DL 3876 arrives on the timetable: more than half a day, so not a connection we count.