"From an All Black perspective, so much of what we do is away from home. Even when we are at home, most players are still away from home because we don't play at just one venue and stay in just one place."
One initial proposal for how Super Rugby should look in 2016 had New Zealand and Australian teams playing in a transtasman division - encountering South African sides only in the play-offs. Another idea was for New Zealand teams to travel to the Republic only once every two years.
As these ideas were being mulled, the All Blacks travelled to Argentina and South Africa in last year's Four Nations and produced back-to-back wins for the second year in a row - with the 38-27 victory at Ellis Park one of the great games of the professional age.
In the debrief, many senior All Blacks are thought to have said they didn't think the team would have pulled off the victory had they not had so much experience of travelling and playing in Africa. At that point, the thinking changed on the future of Super Rugby, with New Zealand supporting only the proposals that allowed for full and meaningful engagement with South Africa.
"The excitement and the challenge of playing in South Africa hasn't gone away," says Foster. "Do our guys want to be in an airplane for the length of time it takes to get there? Probably not. But do they love playing in South Africa and want to do it? Heck, yes, so the travel is just what you have to do.
"It's exciting. Historically, there has been massive respect between the two countries and a great rivalry there. It's a great experience - the intensity of the crowds is different, the people are passionate in a different way to how they are here."