What is the difference between Audi A6 and A7 models?

I am interested in purchasing an Audi A6 or A7 and am curious about the differences between these two models. Can someone provide a detailed description of the variations in features, performance, and pricing?

The Audi A6 is a midsize luxury sedan while the A7 is a larger, more sporty hatchback. The A7 also has a more powerful engine option and offers more advanced technology features, but comes at a higher price point. In terms of performance, the A7 is known for its agile handling and responsive steering, while the A6 offers a more comfortable and refined ride.