LOLOLOLOLOL.
"I'm just making shit up on the fly. Hope nobody actually watches fights here...!"
He threw a perfect knee to the solar plexus. There was literally no controversy. Ever. At all. Stop.
Yes there was, you can't deny controversy even if you don't agree with it. The patella might have hit the chest, but the top part of his knee absolutely hit Chael square in the chin and face.
He's not making anything up, the topic was widely discussed and even fighters like Bisping claimed right away it was an illegal knee to a downed opponent.
Perfect knee to the solar plexus would have been one where the rest of his knee and upper thigh doesn't make contact with Chaels head, but they do.