"I thought Josh did really well," McMillan said. "Obviously, he's been a Highlander for several years now and I would imagine anyone who transitions into another team has a little bit of a sense of split loyalties in some respect, but he's really immersed himself in our environment, he's fit, he's contributed a lot, and I thought for the time that he was on the field he did a really great job and set Bryn (Gatland) up to come on and finish up. I thought it was a great start."
Ioane wasn't the only player to have a successful Chiefs debut in the match. Outside back Emoni Narawa showed positive signs in his debut at fullback, while lock Laghlan McWhannell was a force alongside Brodie Retallick.
For McWhannell, a debut Super Rugby appearance for the Chiefs seemed to have been a long time coming. The 23-year-old has been a member of the Chiefs squad for the last three years, but an unfortunate string of injuries had prevented him from being able to make the next step in his career.
He made the most of it on Saturday night, with an immense performance across the park.
"We saw glimpses of what he was capable of with Waikato in the NPC at the back end of last year," McMillan said of McWhannell. "He's worked really hard – he recognises that we've got a pretty decent stock of locks at the moment so everybody's pushing hard.
"He earned his opportunity to start today and, off the back of that performance, it's going to be hard to leave him out."