Hansen led the All Blacks in over 100 tests and to the World Cup title in 2015, so there were plenty of eyebrows raised, not least in New Zealand, when it was announced he would help rivals Australia with their preparations in France this week.
New Zealand Prime Minister Chris Hipkins even joked Hansen should lose his citizenship.
But Jones sees his presence as a chance to have a critical look at the Wallabies' processes and offer advice if needed.
"I have coached against Steve since 1998. We have a long relationship and we enjoy each other's company," Jones said.