In a large pot over medium heat, add in the sausage and ground beef. Use a wooden spoon to break up the meat into small pieces. Add in onion and garlic and cook until meat is browned. Stir in sugar, basil, fennel, oregano, 1/2 tsp salt and pepper to taste, and 1/4 cup parsley. Pour in crushed tomatoes, tomato paste, tomato sauce, and chicken broth. Stir well and bring to a simmer. Reduce heat to low and simmer 1 hour stirring occasionally.