I have no idea S&B. They are extremely bonded. When separated there is lots of calling and anxiety.
Right now we are seperating for short period of time. Just a few minutes here and there. 
I am assuming he got them as a pair. But really I have no clue.

Vet says both are about 10. As in both have a classic 10 year old mouth.
Hopefully, they are DNA'd with the registry. If that is the case we should be able to piece more of the story together.