If you dont understand why this wasn't overturned than you are a homer. That being said, whatever was called on the field would have stood and you could have gone either way. You can watch it in slow mo now and have a legitimate fight about whether it was a TD or INT, they had to make a quick call and happened to call it an INT.
Actually, no. According to what they “saw” on replay they confirmed it was an INT so that being said, if they called it a TD on the field they would have overturned it due to “confirm” meaning they had indisputable evidence it was an INT.
For the record I thought it should have been incomplete. OSU player didn’t gain full possession until after he was out of bounds.