As I understand it a number of referees sit in an office with a TV screen in front of each of them. They then look at replays of various incidents during a match.
1. Do they get to see every camera angle or does someone decide which cameras they can view ?
2. Does each referee have his own Match Commander (MC) looking over his shoulder or do they all share one M.C.
3. Is it the MC that decides what replays the referee can see ? or Sky/BT , the Pope.?
4. If there is only one MC for all the matches he clearly has a huge amount of control on the outcome of the product sorry match.
Now I am not saying I believe in a huge web of corruption but whilst everything is cloaked in secrecy you can understand why fans believe it is bent.