Now in charge of Scarlets, former Auckland coach Pivac is one of three high profile New Zealanders linked with replacing Gatland after the 2019 tournament in Japan.
Speaking to the BBC, Pivac said that he’d have no choice but to consider taking charge of Wales, with international rugby his aspiration as a coach.
“I was part of preparing Fiji for the World Cup in 2007. I had three years out there and loved every minute of it.
“It (international rugby) would be nice again one day, but it’s all about timing. I’m still learning as a coach.”
Pivac, along with former Chiefs coach Dave Rennie and current Hurricanes boss Chris Boyd, were part of a three-man shortlist drawn up last month to succeed Gatland after 2019.