F9 1665 then AA 1953 at Miami
Baltimore → Miami → St Louis
Timetable, Miami time
13:59F9 1665 from Baltimore at the gate
13:42AA 1953 to St Louis leaves the gate
23 h 43 apart on the timetable, overnight
AA 1953 leaves 23 h 43 after F9 1665 arrives on the timetable: more than half a day, so not a connection we count.