Nope, guess I should explain a little better. Each car should perform battery lowering independently. The building is not on generator power. After they are lowered to the recall floor they would shut down. The problem occurs if only car 1 loses the EPNP input. It locks up car 2 even though the EPNP input on car 2 is still high. Not sure when this would ever occur in a real situation but the inspector wanted to see them both recall independently without affecting the other car.