Boil water in a small pot. Add wine, ½ lemon and 1 clove garlic. Place shrimp in a small colander in boiling water. Poach until tender. Add crab and remove when warm. Place cream in a small saucepan over medium gas heat. Start with a small boil, reduce slightly. Add cheeses and stir until thick. Pour into a large skillet over medium gas heat. Add hot pasta and toss until well-blended. Place in a serving bowl. Top with shrimp and crab. Sprinkle with ½ oz. each of Romano, Parmesan cheese and chopped green onion.