The service took two days. They claimed it might be done in one day, but it wasn't. When they notify you that they are ready for you, make sure you first confirm that they have the battery for your car. That involves speaking with a human being at your dealer. I made the mistake of making the appointment online, and then when I brought it in for the scheduled service, they said that they hadn't ordered the battery! So then they ordered the battery and told me that they would call me when it came in, within 10 business days. After 10 business passed and they hadn't called, I called them. Oh, yeah, the battery had come in, the told me, and they apologized for not notifying me!
I'll just add that all this occurred during the height of the Omicron surge, and my service rep told me that half the service reps were out sick while my car was being serviced.