The core dev of BBR crypto_zoidberg (CZ) has posted about us working together.
With CZ being the only dev to make significant improvements to the cryptonote codebase [...]
this means-
Monero = insignificantok this is no real news cuz we all knew the above equation... but worth a share

~CfA~
Defending the monero devs isn't my job, but as far as I know they are working closely together with CZ on improving the code. If you take a look at the changelog you will see that both CZ and the monero devs are contributing and exchanging pieces of code.