What are the main differences between Audi A6 and A7?

I am considering buying an Audi A6, but I am also interested in the A7. Could someone please explain the major differences between these two models?

The Audi A6 is considered to be the more practical and spacious option, with a larger trunk and more legroom for passengers. The A7, on the other hand, has a sleeker design and a more powerful engine.

One of the biggest differences between the A6 and A7 is the body style. The A6 is a traditional sedan, while the A7 is a sportback, which combines the features of a hatchback and a sedan.