7/30 MDW - ATL: No success, there were 8 BC seats open six hours before the flight, was running late to the flight so I was the last to board the plane and asked the gate agent running down the jetway about BC and she told me it was full.

7/30 ATL - DCA: Success, only 3 out of 12 BC seats filled - walked up to gate agent 45 mins before departure and my boarding pass was pre-printed sitting on the counter waiting for me.