I have always believed in van Aert's longterm GC abilities, but in order to be a valid GT/TDF card to upset the competition, he would need go hardcore, and drop enough weight, to bring him close to or around 70kg. Dumoulin won the Giro at 71kg, but he lost the TDF to Froome at 69kg. I think Wout has a bit more power under the hood than Tom, but he's also a bit taller and still above that weight. Of course, as long as he is close enough in GC they can use him to bluff, he doesn't have to be up there for 21 days to force a move by the competition. Let's say he's still at or around Pogacar's time halfway week 2, if he goes on the attack, UAE/Pog can't afford to let him go, even if at TJV they know he will never make the end of the 3rd week without imploding.