RNZ chairman Richard Griffin says he is still considering whether to hand over a voice recording left on his phone by Broadcasting Minister Clare Curran.
A parliamentary committee on Thursday requested the voicemail and other communications after Griffin and RNZ chief executive Paul Thompson returned to set the record straight on the nature of a meeting between Curran and former head of news Carol Hirschfeld.
The voicemail is the key to determining whose account of the conversation is correct.
Curran has insisted that she was merely passing on advice from the Office of the Leader of the House that Griffin was not required to appear at the Economic Development, Science and Innovation Select Committee and a letter would suffice.
Griffin told the committee on Thursday: "The implication was, as far I was concerned, that it would be far more satisfactory to all concerned if we just put a letter on the table and left it at that."