According to legend, U agreed to back off of expanding at EWR in exchange for the terminal at LGA and the slots that came with it. CO was in the middle of one of its Chapter 11 reorganizations, and it was decided to consolidate all of their NY service out of EWR rather than split it between EWR and LGA. The LGA terminal was almost paid for and nearly complete. So as a result, U pulled a lot of service from EWR, including hourly flights to BOS.