Combine 1 1/2 cups barbecue sauce and 3/4 cup hot sauce in a large zip-top plastic bag; remove and reserve 3/4 cup sauce. Add 1 (40-oz.) package frozen chicken wing sections, thawed, to bag. Seal and chill at least 3 hours or up to 24 hours. Remove chicken from marinade, discarding marinade. Grill chicken, covered with grill lid, over medium-high heat 20 minutes or until done, turning occasionally. Toss wings with reserved 3/4 cup sauce.