UA 1982 then DL 2217 at Miami
Tampa → Miami → Boston
Timetable, Miami time
15:46UA 1982 from Tampa at the gate
20:32DL 2217 to Boston leaves the gate
4 h 46 apart on the timetable
The last days
UA 1982 and DL 2217 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.