A man is pushing many cartons of bread down the street.
A woman is baking bread in the oven.
The subject is either a man or woman. There wouldn't be an oven on the street.
A person cannot be a man and a woman at the same time. One cannot be baking bread and pushing cartons of bread simultaneously. An oven is unlikely to be situated in the street.
pushing many cartons of bread is not baking bread in the oven.