MQ 4635 then MQ 4126 at Miami
Nashville → Miami → Jacksonville
Timetable, Miami time
14:43MQ 4635 from Nashville at the gate
18:35MQ 4126 to Jacksonville leaves the gate
3 h 52 apart on the timetable
The last days
MQ 4635 and MQ 4126 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.