Are rib grafts for failed functional septorhinoplasty usually harvested the same day of the surgery?

Hello I had a functional septorhinoplasty about 2 years ago. It left a dent on the left side of my nose as well as swelling from the mid vault to the nostril also on the left side. It's been a pretty traumatic experience. The doctor performing the revision is going to be using rib cartilage for grafts. Are these grafts grafts usually harvested the same day of the surgery? I would like to ask him directly, but he seems very busy and I don't want to bother him