UA 1901 then DL 2709 at Houston
Guatemala City → Houston → Atlanta
Timetable, Houston time
10:03UA 1901 from Guatemala City at the gate
08:05DL 2709 to Atlanta leaves the gate
22 h 02 apart on the timetable, overnight
DL 2709 leaves 22 h 02 after UA 1901 arrives on the timetable: more than half a day, so not a connection we count.