Locro (Argentine Hominy Stew)

Rinse hominy under running water until water runs clear; place in a bowl with limas and chickpeas. Cover with water, and soak at least 8 hours or overnight; drain. Whisk 1⁄2 cup oil, paprika, chile flakes, and 1⁄4 of the garlic in a bowl; set sauce aside. Heat remaining oil in an 8-qt. saucepan over medium-high heat. Season veal and pork with salt and pepper; working in batches, add to pan, and cook, turning, until browned all over, about 5 minutes. Transfer to a plate. Add chorizo; cook until fat renders, about 2 minutes. Add remaining garlic and onion; cook until soft, about 3 minutes. Add tomato paste, oregano, cumin, and bay leaf; cook for 2 minutes. Return meat to pan with hominy, beans, chickpeas, squash, and 10 cups water; boil. Reduce heat to medium-low; cook until hominy and beans are tender, about 2 hours. Stir in juice; season with salt and pepper. Divide among bowls; drizzle with sauce. Sprinkle with scallions.