Simply don't understand this need for the ref to go to the monitor, simply to preserve the idea that he's the one in charge. Basically every time VAR gets involved the ref is no longer in charge, and occasionally does overturn the on field ref (should probably happen more often). So if the VAR ref can overrule the on field ref for certain things, why does the on field ref have to make a decision on other matters, which will involve slowing the game down further?

It's even the same ref.