In Cardiff in 2006 the Welsh said they would respond to the haka by singing a Welsh hymn after it. The All Blacks then decided they would do the haka in the dressing room. Apparently they felt they ought to be allowed to do it just before the kick-off. I wonder what the Maori elders thought of that?
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Nothing to do with elders. At least get your facts correct.
In 2005 the WRU asked if they could do a crowd song after the haka to commemorate the centenary of tests between the two countries. They stated it was to be a one off break from tradition for a special game. The NZRU said 'no problem', traditions get broken for one offs.
When, in 2006, they declared they wanted the order of pre-match to be NZ National Anthem/ Haka/ Wales National Anthem the NZRU questioned why the change of normal protocols and (more importantly) 100 years of tradition. In the NZRUs view the whole thing would have looked like a farcical ploy to 'negate the haka' (as so many teams seem obsessed with). The WRU kept changing their reasoning for the change (and the failure to recognise the 'one-off' the year before) so the whole thing became a pissing contest.
The ABs aren't obliged to do the haka at all, but to do it as part of a convoluted pre-match jiggled around order would just open the gates for all sorts of stupid ideas in future matches to be negotiated.
The ABs do the haka as part tradition and part personal culture. If the tradition part was going to be taken away that left them with the personal part, which is what they did for themselves in the changing room. They invited cameras in so as to allow a degree of public access (as didpite all the whinging that gets heard, many people around the world actually want to see it as part of the spectacle).
The silly thing was that what started as a WRU idea to negate the haka had the opposite effect as this time the ABs did take it as a slight, not on their culture but on their long proud traditions, and used the changing room haka to get really fired up. They smashed the Welsh off the park.