AA 901 then MQ 4628 at Miami
San Francisco → Miami → St Louis
Timetable, Miami time
05:00AA 901 from San Francisco at the gate
09:26MQ 4628 to St Louis leaves the gate
4 h 26 apart on the timetable
The last days
AA 901 and MQ 4628 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.