Pastitsio with Lamb and Sausage

Name: Pastitsio with Lamb and Sausage
Ingredients: 1 pound ground lamb; 8 ounces hot Italian bulk sausage or 2 links cut from the casings; 1 large fresh bay leaf; 5 to 6 cloves garlic, chopped; 1 onion, finely chopped; EVOO, as needed; 1 fresh or dried small red chile pepper, seeded and finely chopped; 3 tablespoons minced fresh rosemary; Salt and freshly ground black pepper; 2 tablespoons tomato paste; 2 cups dry red wine; 2 cups chicken or beef stock; One 28-ounce can San Marzano tomatoes; 1 long piece orange or lemon rind; 1 cinnamon stick; Salt; 1 1/2 pounds Greek macaroni; 3 egg whites; 1/2 cup grated Parmigiano-Reggiano; EVOO, for drizzling; 6 tablespoons butter; 6 tablespoons all-purpose flour; 1 quart milk; Freshly grated nutmeg, to taste; 3 egg yolks, beaten; 3/4 to 1 cup grated Parmigiano-Reggiano