Collins
Blair
Yes, it is prudent that the rat and chinchilla are not met, do not make them meet unless and until the rat is been tested for the rat diseases. Rats make a nice pet and, with Chinchilla, they will not be facing any issues since they are of the same breed. You have to make sure that after the rat is been checked and clear from all the rat disease, try to make both chinchilla and rats meet with each other, try to make them spend some time with each other but make sure that they do not share the same cage at any point of time, since it would not evoke good results.
The Chinchilla and rat are both from the family of rodents, so they will be having some quality of getting along with each other. I hope the information which has been provided to you in this section makes some sense.