Old rabbit and male guinea compatible??

I suggest to out them together I also have a guinea pig and a rabbit together and let me tell you they are the best of friends Its funny because if I take the rabbit out of the cage the guinea pig just starts whining making those sound it funny. But really I think they will be fine together I never regretted putting them in a cage together. Just becareful because once in a while if the rabbit upsets the guinea pig it will only nip at it but you can catch theam in time because before it nips it chadders it teeth together but that has only happened about 2 times in the last 4 years.