WN 1704 then AA 56 at Miami
Denver → Miami → London
Timetable, Miami time
01:30WN 1704 from Denver at the gate
22:20AA 56 to London leaves the gate
20 h 50 apart on the timetable
AA 56 leaves 20 h 50 after WN 1704 arrives on the timetable: more than half a day, so not a connection we count.