Somewhere in between, there'll be those who plump for the great All Black team who won 17 successive tests from 1965-69 or the Boks who equalled that number with coach Nick Mallett from 1997-98.
Then there's the All Blacks' unbeaten 50 games sequence including 23 tests from 1986-90 which will put them on top of the rostrum for many.
What we do know is that Richie McCaw and his men have produced remarkable results for Hansen since they combined for the first of their 52 tests in 2012. Defeats against England, the Boks and Wallabies and two draws against the Wallabies have been the only blemishes on that chart of sustained excellence.
The All Blacks are certainly at the top of their game and the side to beat in the final burst for the World Cup.
That pedigree does not count for anything on the scoreboard when they step on to Twickenham for the first time in this tournament. The All Blacks don't get any assistance for their four years of excellence although there will be some who think that sustained success will influence French referee Jerome Garces.
He has controlled five All Blacks tests in the Hansen era, including against the Springboks last year and this season, where the All Blacks triumphed. Will there be any subconscious part of Garces' thinking which leans towards another All Black win on Sunday and impacts on the way he sees the match unfold?
For the All Blacks all those results under Hansen will mean zilch if they finish second on Sunday against the Boks. That would of course mean a mountain more to Meyer -- and a beer for Hansen.