[just another ref]

NFHS Basketball rule 2-6: No official has the authority to set aside or question decisions made by the other official(s) within the limits of their respective duties?


What is the baseball equivalent of this? Must an umpire ask for help, such as plate ump asking base umpire about a swing? Or is there any occasion where one ump can overrule another? Or may a coach ever take an appeal directly to the second ump and get a ruling? Does the crew chief ever have authority to set aside any decision made by another ump?

thanks