I wouldn't be surprised in
Winny prevents the some progestin-like activity of
deca/fina. My guess would be competitive inhibition of 5-alpha reductase; with the androgenic potential of
Winny being much less than
deca/fina. Furthermore, the aromatization of deca/fina is also enzyme mediated but likely one of the liver cytochromes not typical aromatase activity. That means that something as simple as grapefruit juice might increase or decrease the anabolic (and side effects). Another option is that
Winny acts like
Clomid. The androgenic effects of
Winny are so weak in comparison to Deca/Fina that it essentially blocks the activity.
I had no idea people were using chasteberry for gyno. Last I heard it was almost useful for PMS. I saw one reference that said it binds to the estrogen receptor and stimulates the PRODUCTION of progesterone receptors but it doesn't activity the progesterone receptor. So it's conceivable that chasteberry may block the estrogen and progesterone receptors.
Exemestane can have a negative influence on estrogen and boost HDL at the same time by acting through different pathways. Although estrogen is important for HDL it clearly isn't the sole determinant of HDL. In fact, Pfizer has a drug in development that has doubled HDL levels in early trials.