DL 1981 then UA 3775 at Boston
Fort Lauderdale → Boston → Chicago O'Hare
Timetable, Boston time
10:20DL 1981 from Fort Lauderdale at the gate
12:30UA 3775 to Chicago O'Hare leaves the gate
2 h 10 apart on the timetable
The last days
DL 1981 and UA 3775 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.