Patrilateral parallel cousin marriage

We need to look closer at Nahor and Abraham and that they were brothers. Some people try to say that the Ismaelites and the Arameans intermarried.  Why?

• Nahor’s wife Milcah and had Buz
• Abraham with Hagar had Ishmael

Patrilateral parallel cousin marriage is the marriage of brothers’ children.

Eric and Ben are brothers. Say Eric has a girl Cindy and Ben has a boy Tommy. If Tommy and Cindy marry this would be a case of Patrilateral parallel cousin marriage.