Nope. The thing about indistinguishable is by whose standards. As a grandkid I knew my grandparents as these old people who lived far away and I met a few times. My grandma had a litting irish broge that was just entrancing and my grandpa was skinny and walked a lot and ate little. That is pretty much what I know of them. Any vaguely close immitation would be easily indistinguishable for me but for my parents it would need to be much better and one that was for the other would need to be to be oh so much better. Ultimately though its not actually the person.