Chisora Beat Helenius and a Ref

Funniest part of the fight was Helenius grabbing Chisora and clinching and then because Chisora's head was on the level of Helenius's chin he would get warned for headbutting? Then Helenius would grab his arm and Chisora would use his right and the ref would warn him for holding and hitting? He wasn't holding, he was being held and he had to use his right to defend himself.