Especially of note:
Ignoring the haka is a tactic sometimes used by opposing teams. Famously, the Australian rugby team did a warm up drill well away from the All Blacks during their 1996 Test Match in Wellington and went on to suffer their worst ever loss against the All Blacks (43-6). More recently, the Italian rugby team ignored the haka during a 2007 World Cup Pool Match, and the All Blacks then went on to beat them 76 – 14.
I wouldn’t ignore this article if I were you.