Unless you go to basically a non franchise, non chain, actual asian/chinese restaurant/take out place... yeah basically if you dont do that, you are getting pretty much reconstituted chicken puree doused in... not really even real orange chicken sauce.

As with much modern food in America... its got waaaay more sugar and is missing other vital parts of the original way of making it.

Real orange chicken from a real chinese place tastes significantly different, and varies from place to place if they actually make the sauce on site. Usually a different medley of spices and oils... way more flavorful than extremely sweet orangeness.

standard white gravy is just butter, flour, and a lot of milk, that somehow turns from liquid into a paste as you stir and heat it.