Can homeschooled students realistically get into the Ivies

I know Harvard says on their website that they treat every application the same, even for homeschooled students. But I’m wondering if they actually accept homeschooled students for undergrad, and whether their chances are lower compared to applicants who attend a regular high school assuming that the homeschooled student has competitive scores and extracurricular

Also curious if this is the same for other Ivy League schools.

For context, I took IGCSE, I’m currently doing AS and A Levels