Wales in Serbia last year: https://www.mirror.co.uk/sport/football/news/wales-fans-donate-blood-help-10607042
There was Var. They even referred to it when Kane was wrestled to the ground, but missed what the whole world saw. That game involved one of the most inept refereeing displays ever, but was it still no advert for Var. Three fallible humans on the pitch are enough, no need for additional ones in a video room.
It also applies if they are all celebrating in their own half. Iirc there was some video that went viral of a team all running to their own corner flag for some organised celebration and the other team kicked off and scored whilst they were doing it.