AA 1920 then WN 1241 at Charlotte
Ontario → Charlotte → St Louis
Timetable, Charlotte time
06:02AA 1920 from Ontario at the gate
10:40WN 1241 to St Louis leaves the gate
4 h 38 apart on the timetable
The last days
AA 1920 and WN 1241 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.