The All Blacks have a busy week of preparation ahead of them but Dagg said he was pleased with how quickly he had formed a rapport with Smith and Savea.
"We've played three tests now together so it's pretty quick to get to know each other but we've played Super rugby for a couple of years now and played against each other," Dagg said. "But it's pretty easy to translate into this team, everyone knows their roles, everyone knows the players so I'm enjoying the combination back there, working hard for each other.
"We've got a lot of confidence in each other and I think Cory Jane's at home getting a bit sad about it but we are just doing our thing."
Dagg's playful jibe at Jane is another reminder of how awash New Zealand rugby is with top talent. Jane will be keen to return to the fold once he recovers from a serious knee injury he suffered this year.
Jane had a mortgage on the All Black No14 jersey during the past few years, but his time off the field has opened the door for Smith, whose irresistible form with the Highlanders this season demanded his inclusion somewhere in the All Blacks' starting XV.
He was one of the form players during their 3-0 clean sweep against France in June and Dagg said it was no shock the new-look back three worked so well together with only limited preparation time.
"I'm not surprised, it's our job, it's what we've got to do. If we are going to go out there and play half-hearted and not connect well, then we won't click together. So we've just got to transition well and start talking and get this combination right because everyone knows we don't have a long time together to get it right."
Dagg has never lost a test against Australia in six previous outings.