Olive trees were cultivated over 7000 years ago. Pigs were domesticated somewhere between 5 and 7 thousand years ago. So obviously, olive oil came first.
I see where you’re going. The old Wiki route or whatever.
Sorry. Hunting as a “way of life” precedes agricultural by many tens of thousands of years. They would have been familiar with animal fats/lards way, way before they learned how to press/squeeze an olive. Ever eat a raw olive? Bleh!!!!
They weren’t “gatherers/hunters”.
They were “hunters/gatherers”.
Anyways not worth arguing about...