Today's surprise resignation by Reserve Bank Governor Adrian Orr has left experts with plenty of questions.

Neither the Prime Minister nor Finance Minister are giving any details of why the most powerful, non-elected person in Government has abruptly quit. 

Not only have Nicola Willis and Chris Luxon gone to ground - the Reserve Bank will not answer media questions about the departure. 

ZB senior political correspondent Barry Soper suspects Adrian Orr may have found other opportunities elsewhere - and aimed to leave while the economy was recovering.

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