I was in for a recall notice. The front desk told me 15 minutes and they closed in 15 minutes. The service desk told me 45 and that it could be done while I waited. As I was not in a rush, there was no problem, but it struck me that the messages should be closer than a 30 minute differential. When I got home, I realized that they had not replaced one of the valve covers so that entailed another visit to the service bays.