I have been reading the Bell book about the chapel of St Peter Ad Vincula, in the Tower of London. I understand that while the bones of several people were not able to be identified were co-mingled for re-burial. Some remains were found buried where it was said they were. Among those identified were those of Anne Boleyn. The bones that were identified were put in their own containers with their name on it and reburied where they were found.
Therefore not co-mingled.
It is also interesting to note that there appeared to be evidence of the "extra" nail, that Anne was supposed to have had.