"VAR" instead of appeals in the Olympics

In football and actually in most sports, it is not possible to make an appeal against the referee's decision. For some reason, it is the opposite in climbing which sometimes make us wait for an hour or so until we have the final result. Sure the judges can make wrong calls but that is how it is. In football, in order to solve this, they have introduced VAR for critical goal situations in the most important games. As it stands, the team coaches can make appeals and then the result could reflect also how good the coaches are to make it in writing. Would it not be great to skip this appeal procedure and also introduce VAR in the Olympics? The VAR guys would be looking at the live-streaming and other cameras and they could whisper to the referee that he/she should have a look at certain incidents. In the same way, the referee could ask the VAR guys to check close calls. Further more, with a head referee there could me some space for not following the rules strictly black or white. In situations like Adam Ondra's questionable stepping on a bolt, the referee could say that it was in the grey zone and that Ondra did not benefit from it.