The name for the recipe makes it sound far more complicated than it really is. You make the 'meatballs' by squeezing sausage meat into meatballs.
The receipe then calls for a multitude of saucepans - to cook the soup, to cook the meatballs and to cook the pasta. I don't like to use that many pots and pans unless the recipe is crazily complicated so I didn't. (It's not even that I do the washing; when I cook, G washes).
So I did the tomato soup - using a combination of passata and fresh tomatoes as we didn't have any canned tomatoes. I cooked the pasta in the soup, and fried the meatballs in a pan, before serving them on top of the soup.
Lesson - add more liquid to the soup than is called for in the recipe if you are going to cook the pasta in it - the pasta really soaks up the liquid!