In cricket, one of the officials is the third umpire. Usually, they deliver a decision only when there is a referral from the on-field umpires or from a team in UDRS. Can the third umpire give or overturn an umpire decision without being asked?
For example, the field umpire calls and signals a no ball, and it is known to the third umpire that it is a fair delivery. In a situation like that, do the laws or regulations give authority to overrule the field umpire's call without referral?
Can they contact the field umpire and reverse the decision when it is clear the decision made by the field umpire is wrong?