But if it's already clear and obvious there's no need for VAR in a first place.
For clarity, this was the speal from UEFA they put in the Munich programme:
A VAR team at the stadium will constantly check for clear and obvious errors related to the following four match-changing situstions:
1. GOALS.
2. INCIDENTS IN THE PENALTY AREA.
3. RED CARDS.
4. MISTAKEN IDENTITY.
What’s the process?
• The VAR team will check all match-changing situations, but will only intervene for clear and obvious mistakes. The referee can hold up play while a decision is being reviewed.
• If the VAR review provides clear evidence for a serious mistake in one of the game-chamging situations, the VAR can then ask the referee to conduct an on-field review. The final decision can only be taken by the referee.
• The VAR is also able to take into account any infringement that could have taken place in the build up to the incident. (The attacking phase of play.).
• For ‘factual’ decisions (e.g. offsides, fouls in or outside the penalty area), the VAR can simply inform the referee of those facts and the on-field view screen isn’t needed, but it is always the referee who takes the final decision.
• The on-field review process will be communicated within the stadium using either the stadium screens or rhe public announcement system.