The idea of a narrow "anabolic window" right after training has been popularized for years, but more recent research suggests the timing window is far more forgiving than once believed.
What matters more consistently is your total daily protein intake relative to your training volume and goals — hitting that target across the day outweighs precise timing.
That said, having a convenient protein source on hand post-workout still helps many people simply hit their daily targets more consistently, which is where the real benefit lies.