I don't think Vitor landed "clean" but he landed a shoulder/head punch or two. I felt Vitor looked very strong in their fight and might have done a lot better than anyone else would had he not been KOed so unpredictabley. I don't feel a KO punch is in any way relevent for Jones to land on Silva anyways. It's not his style for starters...
I'm probably the best at keeping threads on topic of all time.