What is the history of the Bush Family and the Bin Laden Family?

I know Bush Sr was with a Bin Laden brother on 9/11. I know there is film footage of GW holding hands with Bin Ladens in the ranch. I know they have helped as others with the oil of GW and GW has helped them talk to his father when he was in office Bush SR that is. What info do you know about this family friendship?