BGOs do have LIMITED info about your medical status. We know if you're qualified, rejected, or (some other category between the two). However, we have NO idea why you are rejected -- and "rejected" is not necessarily a permanent status. I THINK it means that you are DQ'ed, but could still obtain a waiver. We have NO information regarding the status of a waiver or whether it will be granted.
We are told not to inquire about a candidate's medical status/issues, both for privacy reasons and, quite honestly, because we have no expertise, knowledge, input, etc.
I do emphasize to candidates that they start the medical process as early as possible (which means getting 50% of your package complete) b/c there are always candidates who think they're perfectly healthy and something crops up. The earlier you start, the longer you have to deal with it successfully.
IF (and it's rare) a candidate volunteers medical information -- or it's obvious, such as when the candidate arrives on crutches -- and IF APPLICABLE, I will relay the general info USNA provides to BGOs about common medical issues, such as asthma. However, I also make clear that every candidate's medical situation is unique and they need to follow up with DODMERB and USNA Medical. I'm not the one to help them on this issue.
Bottom line: the BGO really shouldn't be discussing medical issues with you beyond the general subjects noted above.