There is no way BB let go of a bigger offer from Cleveland, or even the Jets, because 'in the conference'.
BB traded Bledsoe in the division.
A smart coach wouldn't worry so much about 'this will improve the other team' because the trade will also improve his own team, and by doing things that hurt your own team in order to prevent other teams from advancing, you're not going to end up winning.
The only question is, if trading Jimmy was a possibility, why didn't they hold onto Jacoby as the backup/developmental.
Right now we have Hoyer, who by signing a 3 year contract, has basically admitting he will never start again in his career, and are missing the 'potential future qb'.