The issue I have with altior is the riding tactics.
His best two furlongs are the last one, and the furlong after the finishing line.
If Nico waits too long again he's eventually gonna come a cropper. They're wasting a pretty strong finishing burst that he can sustain for longer than he is being allowed. He will need to go as they come down the hill and keep going.
The stronger pace that is likely in the champion may help him.
Why? You have nailed it and if you know I am sure Nico knows