Do you have a source that says the 5-month delay was caused by that refusal? Because while one of them at least refused to come they did present a response that should have been enough to continue the meetings and not cause a 5-month delay.

Te Pati Maori refused to go before the Privileges Committee but did provide a written response, saying it was appropriate “to rise and haka to express anger and opposition to a subject that is abusive and denigrating”.

https://www.smh.com.au/world/oceania/new-zealand-mps-behind-viral-haka-protest-suspended-from-parliament-20250515-p5lzdp.html

Why did they take so long for these members and not the labor member who they already dealt with? Why the delay between those two events? Why did this ruling conservative party have so much trouble with what should have been a simple recommendation? And why did they delay it until now?