Orange Cheesecake with Candied Kumquats

Name: Orange Cheesecake with Candied Kumquats
Ingredients: 2 cups water; 2 cups sugar; 1 vanilla bean, split lengthwise; 9 ounces kumquats (about 25 medium), thinly sliced crosswise, seeds removed; 2 cups vanilla wafer cookie crumbs (made from about 9 ounces cookies, finely ground in processor); 1/3 cup (packed) golden brown sugar; 6 to 7 tablespoons unsalted butter, melted; 1 cup fresh orange juice; 1 cup sugar, divided; 2 tablespoons finely grated orange peel; 4 8-ounce packages cream cheese, room temperature; 1 cup sour cream; 3 tablespoons all purpose flour; teaspoon salt; 5 large eggs, room temperature