UA 348 then AA 335 at Miami
Houston → Miami → Guayaquil
Timetable, Miami time
19:55UA 348 from Houston at the gate
18:47AA 335 to Guayaquil leaves the gate
22 h 52 apart on the timetable, overnight
AA 335 leaves 22 h 52 after UA 348 arrives on the timetable: more than half a day, so not a connection we count.