Isn't there a rule that if you ride CX with the elites that you also have to do that in the other disciplines? Or is it just that if you go to the elites you can't go back for championships in the U23.
I'm not sure; Alvarado won the CX Worlds in 2020, but then did the delayed World Cups, and MTB Worlds as an U23, and got a bronze.
Both Pieterse & Burquier are riding in the Elites, but can ride as U23 in Euro/Worlds...like Stigger did for the last few seasons. However, both Mitterwallner, and Van Empel are riding as full on Elites. There is a form on the UCI website showing those U23 riders in Elite category.
In other news, neither XCC World Champion Sam Gaze, or Pidcock will ride tonights XCC; both ranked outside the Top 40; however, Milan Vader, who has missed nearly 2 seasons, is allowed under his old #35 ranking due to injury.