Is it possible that my dog is mistaking me for my identical twin?

While I'm on deployment, my best friend back home is babysitting my dog for me. He's about 11 1/2 months old now. I knew it would be sort of rough on the dog but after this deployment, I'll get him back and no more deployments for me. So question being, my twin brother stops in about every other weekend or so and my buddy says my dog just cries and cries and begs for my brothers attention. Then after he leaves, my dog will continue to cry for the next day or so. He also is having problems being in the crate. Won't stop whining but he was never like that with me. (I adopted him when he was roughly 8/9 weeks old and had him up until early May) Is it possible he's confusing him for me? I thought dogs recognized humans by smell? My buddy also has a dog and will separating them for a few months after 8 months affect both dogs? That will only be temporary after my return cause I don't have service time left. Also, my brother does show my dog love and treats him as if he were me because of the crying. Hoping this all made sense