Rieko Ioane's selection on the left wing for the first test against the British and Irish Lions last year wasn't without its debate among the All Blacks coaches and particularly assistant Ian Foster, who described it initially as "dumb" and "ridiculous".
Foster's incredulity at head coach Steve Hansen's suggestion days before the test at Eden Park last July that the All Blacks swap Julian Savea to the right wing to allow for the then 20-year-old Ioane to have a go on the left is revealed in the Amazon Prime Video documentary All or Nothing: New Zealand All Blacks.
Such robust selection debate is likely common at the All Blacks - it certainly is with most teams at the top level - but the exchange between Hansen and Foster during a training session in west Auckland contains probably the most dramatic tension of the entire six-part series, which began screening on Friday.
It is resolved quickly, and Ioane went on to score two tries in the test and develop into one of the All Blacks' most powerful and pacey strike weapons, a series of performances that earned him World Rugby's breakout player of the year award. It effectively marks the end of Julian Savea's reign in the No11 jersey.
But it gives an insight into the relationship between Hansen and Foster, who is a good chance to take over as All Blacks head coach if and when Hansen steps down after next year's World Cup in Japan.