DL 515 then UA 214 at Atlanta
Los Angeles → Atlanta → Houston
Timetable, Atlanta time
14:13DL 515 from Los Angeles at the gate
17:00UA 214 to Houston leaves the gate
2 h 47 apart on the timetable
The last days
DL 515 and UA 214 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.