In a large skillet add 1/4 cup soy sauce, 1 Tbsp brown sugar and 1 tsp minced garlic. Stir with a wooden spoon to combine.
Over medium to medium-low heat cook chicken pieces in soy sauce mix (about 7 minutes)
Bring 2 qts of water to a boil in a large pot and cook chow mein noodles for 3 minutes. Drain and set aside.
When chicken is almost done (after about 5 minutes) add shrimp to skillet. Cook for an additional 2 minutes.
In a small bowl combine remaining soy sauce, brown sugar, minced garlic and ginger.
Add chow mein noodles to skillet and drizzle soy sauce mix on top.
Stir with wooden spoon and let cook for 3 minutes.