What is the difference between regenerative braking and plug-in charging in the Audi e-Tron?

As a new owner of the Audi e-Tron, I am curious about the various ways to recharge the battery. Can someone explain the distinction between regenerative braking and plug-in charging and when it is appropriate to use each method?

Regenerative braking is a feature in the Audi e-Tron that captures energy from braking and stores it in the battery. This is most useful in stop-and-go traffic or downhill driving. Plug-in charging, on the other hand, involves physically connecting the car to a charging station or outlet to replenish the battery's energy. This is necessary for longer trips or when the battery is low. Hope this helps!