Australia may have "started to get the recipe right" in terms of batting, but a still raw bowling attack is letting England dominate as they now eye a series whitewash.
That's the verdict of Australia vice-captain Aaron Finch, who hit a century on his return to the top of the order at Durham's Riverside ground, but watched on as England chased down Australia's 8-310 in a canter with more than five overs to spare.
And what Australia's bowlers learn out of the experience, including conceding a world record 6-481 at Trent Bridge earlier this week, remains to be seen.
The Aussie bowlers were always going to be up against it on this tour. The side is missing its entire first-choice front-line fast bowling attack and are facing the world's best one-day team in some red-hot form.
The big-hitting, aggressive nature of England's batting line-up is forcing Australia's bowlers into mistakes as they lose line and length.
And it's happening with alarming regularity on a team-building tour where the Australians have been outplayed in every facet.
"The mood after you lose a game anytime is always down," said Finch. "The bowlers are still learning, they're a young and inexperienced attack.
"But the last couple of games we've been making the same mistakes, so that's something that we need to look at."
Australia's most experienced ODI bowler on the tour is Kane Richardson with 17 ODIs to his name, and he has been omitted from the past two matches.
Towering fast bowler Billy Stanlake has now played five, and new-ball partner Michael Neser played his second in Durham.
Promising young quick Jhye Richardson has four ODIs to his name and AJ Tye, who has suffered most at the hands of the England bats, has played seven ODIs.
Nathan Lyon has 306 Test wickets from 78 matches and is hugely experienced, but played his first ODI in nearly two years in Durham, with a tidy 1-38 from seven overs in his 14th match.
And Ashton Agar, who has impressed with bat and ball on this tour, now has eight ODIs under his belt.
It's a sum total of 57 games worth of experience within the squad. For context, Starc alone has played 72 ODIs, Hazlewood 40, Cummins 39.
Plans are formulated in the safety of the team's dressing room or hotel, but in the glare of the spotlight have proven difficult to execute.
"Going forward we've got to commit to our plans for longer and if (Jonny) Bairstow and (Jason) Roy get away at the top, they're going to have to play really well against good balls," Finch said.
"We're just giving them the opportunity to hit a boundary early in their innings, early in an over and really stay on top of our young attack.
"It just feels like we're always chasing the game at the moment.
"It's tough for them, no doubt, two days after what happened at Trent Bridge, but there's nowhere to hide in this game, and we're playing against the best in the world.
"The learnings will be valuable, whether they're good or not, that's hard to say. But they'll definitely be valuable going forward."
Speaking after England's record-breaking total at Trent Bridge, Australian World Cup winner Mike Hussey said he feared the series would leave some mental scars on the young Australians.
"I feel for some of the bowlers because unfortunately they’re going to carry that around with you for the rest of your career," Hussey said on The Unplayable Podcast.
"I often bump into people and they talk about ‘Mick Lewis is that guy that went for 100’ and so Andrew Tye is going to be another one of those guys.
"It’s not the sort of thing you want to be remembered by.
"I know with Mick Lewis it certainly had a mental effect on him for quite a period of time."
Bairstow entered the Durham ODI with four centuries in his past six innings and added another 79 from 66 balls before he got too cute and glided Billy Stanlake into Tim Paine's gloves.
Roy was bowled for a second-ball duck by Stanlake at The Oval but has since hit 120, 82 and 101.
"When they're getting off to such fast starts, they're able to play at their own tempo through those middle overs because there's not a lot of pressure on them," Finch said.
"They're getting 75-80 in most Power Plays as well. That's disappointing. (We need to) polish up a little bit with the ball. Just a bit too wide at times, a bit too full at times.
"But with the bat we started to get the recipe pretty close to being right."
Qantas tours of the UK and Zimbabwe
Australia ODI squad: Tim Paine (c), Aaron Finch (vc), Ashton Agar, Alex Carey, Travis Head, Nathan Lyon, Glenn Maxwell, Shaun Marsh, Michael Neser, Jhye Richardson, Kane Richardson, D’Arcy Short, Billy Stanlake, Marcus Stoinis, Andrew Tye
England ODI squad: Eoin Morgan (c), Moeen Ali, Jonny Bairstow, Jake Ball, Sam Billings, Jos Buttler, Sam Curran, Tom Curran, Alex Hales, Craig Overton, Liam Plunkett, Adil Rashid, Joe Root, Jason Roy, David Willey, Mark Wood
Australia T20 squad: Aaron Finch (c), Alex Carey (vc), Ashton Agar, Travis Head, Nic Maddinson, Glenn Maxwell, Jhye Richardson, Kane Richardson, D’Arcy Short, Billy Stanlake, Marcus Stoinis, Mitchell Swepson, Andrew Tye, Jack Wildermuth
England T20 squad: Eoin Morgan (c), Moeen Ali, Jonny Bairstow, Jake Ball, Jos Buttler, Sam Curran, Tom Curran, Alex Hales, Chris Jordan, Liam Plunkett, Adil Rashid, Joe Root, Jason Roy, David Willey
Qantas Tour of the UK
June 16: England won by 38 runs in Cardiff
June 21: England won by six wickets in Durham
June 24: Fifth ODI, Old Trafford
June 27: Only T20, Edgbaston (D/N)
Qantas T20I tri-series Tour of Zimbabwe
July 1: Zimbabwe vs Pakistan
July 2: Pakistan vs Australia
July 3: Australia vs Zimbabwe
July 4: Zimbabwe vs Pakistan
July 5: Pakistan vs Australia
July 6: Australia vs Zimbabwe
July 8: Final