UA 1447 then DL 2709 at Houston
San José (Costa Rica) → Houston → Atlanta
Timetable, Houston time
12:37UA 1447 from San José (Costa Rica) at the gate
08:05DL 2709 to Atlanta leaves the gate
19 h 28 apart on the timetable, overnight
DL 2709 leaves 19 h 28 after UA 1447 arrives on the timetable: more than half a day, so not a connection we count.