"At this stage, Trent and I still need to have a conversation," Stead said after New Zealand lost to India in the World Cup semi-finals in Mumbai. "He's unavailable for the Bangladesh Test series. He's got other commitments in a T10 league, and then the UAE T20 league as well. I think that eats right into the February time period.

"So, it looks unlikely that Trent will play too much in our home summer. He may be available for the T20s against Australia. I still need to have that conversation with him."

New Zealand are scheduled to play three T20Is against Australia in Wellington and Auckland in February 2024, which could precede IPL 2024, where Boult is among the most sought-after overseas seamers. The T20 World Cup will potentially follow the IPL and will run from June 4 to June 30 in the Caribbean and the USA. Stead hasn't ruled out the possibility of Boult returning to the New Zealand side in the near future.

"I think there's every chance [we will see him again] provided his desire is there to keep playing," Stead said. "I think he's still a world class bowler."

"It's probably in the bowling we're going to see some changing," Hesson told Sky Sport NZ. "Boult and Southee; even [Matt] Henry [is] sort of in his mid-30s as well. You think Adam Milne. You think Lockie Ferguson. So, there are five seamers who probably won't be here in four years' time.

"They are all in slightly different stages [of their careers]. And there's not a huge amount [of seamers] just underneath at the moment. That's where someone like Kyle Jamieson has to absolutely pick that next group of bowlers and run with them. They've tried a lot of guys in recent tours - [Henry] Shipley, [Jacob] Duffy, [Blair] Ticker has come in and done a bit as well. They brought the left-armer from Auckland - [Ben] Lister. They've tried lots but no one has really grabbed it just yet and that's probably the area where I'm a little bit worried about the next group of Black Caps."

At 34, Boult and Southee are New Zealand's oldest members in their current World Cup squad, with allrounder Rachin Ravindra being the only player under 25 in the group. Captain Kane Williamson, though, had said that it's not the end of the road yet for New Zealand's golden generation.

"It's an ongoing effort as a side to keep trying to get better and push the boundaries of where we can get to as a team," Williamson said at his press conference after the semi-final. "You can only hope that, as we experienced from some of our leaders as young guys, that we can continue to bring players through - not just in the quality that [the senior players] bring, because we've seen that in spades throughout the last seven weeks, but also in how they're approaching their cricket in order to try and move this team forwards.

"I think we've seen that too - so some good signs, certainly, in this last period of time. It's not over just yet, but that's where the focus is. You come to these tournaments and they can be small margins [which determine] whether you get further or not, but ultimately, it's about growing as a group and becoming a better cricket team. I think the seven weeks were really valuable for us as a side: we wanted to go further, naturally, but we'll reflect on it and take a lot of good out of it."

"Look, I'm very, very proud of the way we played," Stead said. "We stuck to our style of play and we fired some shots as well. That's what we keep talking about. Obviously disappointed that we didn't get over the line. You always go to world events and you want to make the final or you want to win the final. That's the disappointing part of it, but the way we went about our cricket, it was a pretty satisfying campaign still."

Shane Jurgensen ended his stint as New Zealand's bowling coach after the World Cup while Stead will take a break. In Stead's absence, Luke Ronchi will be in charge of the team for the two-match Test series in Bangladesh, which begins on November 28 in Sylhet.