"He was really lovely. He was asking questions about Māori culture and about New Zealand. He was an inquisitive, curious human being," Stuff reported Gayford telling the event.
"We had to hongi him, and I was one of the first ones up and I was pretty nervous – and he'd only done one before either. Lovely soft nose!"
Gayford and Neve will accompany Ardern to New York on Saturday for the United Nations General Assembly. The Prime Minister's visit includes three major media appearances: the Late Show with Stephen Colbert, the Today Show, and a longer interview with CNN's Christiane Amanpour.
In New York, Gayford will mostly focus on looking after Neve, but he told Lambie that only that morning he'd received a very special invitation all of his own.
He read from his phone. "'Mrs Melania Trump requests the pleasure of your company for a reception on the occasion of the 73rd United Nations General Assembly'.
"She must be doing it for all the spouses."
"Tea and scones with Melania," said Lambie.
"Yeah," said Gayford. "Tea and scones with Melania. I don't know quite where it is. I'll see if we have time."
Gayford also described former Australian prime minister Malcolm Turnbull as "actually, really quite personable".