Today while attempting to book a HDN-DAY round trip, the first choice on flights left from ATL and went to HDN connecting to a flight from ATL-DAY.
Only over 1000 miles between gates.
By mistake, I tried to book it without noticing this minor gate separation and "fortunately" got the "just sold out" message.
After another try, I checked a little closer and found the problem and surprisingly was able to book a good flight.
Cheers