Overfilling the oil in the car

well I dont know now exactly because the engine stalled on the way home so I went to look at it and told him to try starting it up and when he did the engine was taping so loud and when I went to check the oil it was 1 qt plus and dirty from not changing the oil filter… Now Im pretty sure that the rod bearings are in the bottom and they are wanting to argue with him over this …