His time on the climb is very impressive either way. Also the fact that he beat Carapaz on the climb. Giro winner and climber, who would have been even more fresh for the climb than Van Aert. Since he spared himself just for that.He was clearly pacing himself on the flat part, unlike Dumoulin, Pogacar, Cavagna etc, who were up to 50s faster before the climb, so he was clearly saving himself for the climb. So he started the climb fresher than the others.