Yeah, as far as I'm aware (and I spend way too much time reading about cat coat genetics), that combination of colors could only happen in a cat with 2 unique sets of DNA. I would still call that a tortie, though.

That blue eye though, I don't know enough about eye color genetics to confidently say, but the other features of the cat look like a Maine Coon, so it is possible that this cat came from a breder and there was intentional selection for eye color.