What sport puts on the HS college and pro championships on the same weekend? bad marketing !
very simple nobody checks to see what anybody else is doing.
heck half the time USATF will allow 2 or 3 major events on the same weekend. take this year us oly trials marathon and nb grand prix in boston on back to back days. or even back a number of years ago us mens ot marathon and us xc champs on the same day.
Good opportunity to promote it as Championship WEEKEND. In the end what would be the upside to having them on different weekends...
Also how would you propose to change the dates for either of the meets?