Can't help you with your request, but I hopefully will have some BRES hybrids this year. I have one pond that is a SMB/RES pond with RES being the only lepomis (with a very few accidental GSF/RES hybrids I have been removing). Last year I put a single 8 or 9" beautiful CNBG male in that pond in the hopes of spawning some CNBG/RES hybrids.
The CNBG male could have possibly got a nest made and spawn last fall, but more likely this spring.
Bigbluegill.com might be a place with some more information. I don't hang out there much but that is Mr Condello's domain.