Chicken and Shrimp Carbonara
1 (16 ounce) package linguine pasta 1 onion, diced 1 pound boneless, skinless chicken breast hal… 1 pound large shrimp, peeled and deveined 1 ½ cups grated Parmesan cheese 1 ½ cups heavy whipping cream 2 tablespoons Italian seasoning 3 tablespoons minced garlic, divided 4 egg yolks 4 tablespoons olive oil, divided 8 slices smoked bacon, diced salt and ground black pepper to taste ¼ cup Sauvignon Blanc wine