Almost 1 year post rib revision rhinoplasty, what is this hanging in my nose since day 1? (Photos)

There is a graft hanging in my nostril. I noticed it immediately after surgery and it's still there. It's quite hard to the touch which makes me think it's a rib graft. It did affect my breathing but it seems to be getting better. My surgeon claims it's scar tissue but how can that be if it was there from day 1? Any reason to be concerned? For the most part it doesn't bother me and it doesn't hurt.