Having such an extended period of uninterrupted preparation led Hansen to say when asked about the threat the Wallabies posed: "It's farcical to think they [Australia] won't turn up and create a tremendous competition in this Rugby Championship [despite their Super Rugby form].
"Australia have got four weeks to prepare for the first test, we've got a week by the time we get everyone there, so that's an advantage. They've brought some quality men back from overseas and they've also got a quality coach coming in from New Zealand by the name of Mick Byrne, so that will enhance them as well."
Whatever coaches say about the value of having the whole squad together to train for weeks ahead of a test, there's no better preparation than tough, competitive matches. Players learn more by playing big games than they ever do on the training ground.
The Wallabies will have all the time they need to develop a deeper understanding of their game plan and build a sense of unity and purpose. They will be able to work combinations in training, get the timing of their setpiece right and understand across the team where they want to be playing their rugby on the field.
But as much as a prolonged training window is a blessing, it's also a curse. Players typically relish a couple of weeks off playing at this time of year, but not necessarily a month. That much time without a game becomes counter-productive. It drains the players mentally to do so much training without the release of playing.
And that's the danger for the Wallabies here. A huge number of them will come into the first Rugby Championship clash having not played for five weeks. The timing falls away not playing for that long. The ability to react slows as players have fallen out of the habit of seeing the cues in their opposition.
Hansen is right, Australia will be competitive - fiercely so - but they would have been an even greater worry if more of them had greater exposure to the Super Rugby playoffs.