I have taken the DNA test and my results show a close family member ( A 1771 CM). It also shows another individual who appears to be some kind of cousin (B 792 CM) A's reported father and B's mother were brother and sister. My father is not As reported father. A is not a Grandparent, Grandchild, Aunt or Niece. The only logical relationship is half sibling but that doesn't make sense. If A is a half sibling, and would come from my natural father's side, how can I share DNA with B? I need smarter minds to help.