UA 3917 then DL 2709 at Houston
Puerto Vallarta → Houston → Atlanta
Timetable, Houston time
14:17UA 3917 from Puerto Vallarta at the gate
08:05DL 2709 to Atlanta leaves the gate
17 h 48 apart on the timetable, overnight
DL 2709 leaves 17 h 48 after UA 3917 arrives on the timetable: more than half a day, so not a connection we count.