For the first time both reigning AFL grand finalists have started 0-2, but as Collingwood's woes are examined heavily, Brisbane's form remains relatively undiscussed.

Their one-point Opening Round loss to a rampaging Carlton isn't catastrophic, even at home after leading by 46 points.

But after slotting the first four majors in Perth and falling to Fremantle convincingly, coach Chris Fagan has diagnosed the early season issue with his Lions.

"Two weeks in a row now the middle part of the game has been a problem," Fagan said post-game.

"I've never encountered that with this group before.

"You don't want teams to score a lot of goals in a row but that's happened twice in a row now.

"There were just silly mistakes... dropped marks, fumbles, inexplicable things."

Brisbane have escaped this predicament in previous seasons, falling 0-2 in 2021 before rallying to finish the season with a double chance.

Next week's bye comes at a convenient time to shake off any pre-season rust before their Round 3 grand final rematch at the Gabba.

"We've been 0-2 and made top four," Fagan added.

"If we had've won the first two games I'd probably be saying I don't want that bye.

"It's a crazy game, football... Collingwood, who play in the grand final last year are struggling as well."

While injuries to key back Darcy Gardiner and running rebounder Connor McKenna compound the concerns at Brisbane, recruit Tom Doedee etches closer to his Lion's debut, crucially adding to their now depleted defensive stocks.

Brisbane Lions recruit Tom Doedee (image via Brisbane FC)

"Darcy Gardiner's done a PCL injury... Connor McKenna's done a hamstring," Fagan revealed.

"We've gotta go to work again on our backline because Connor obviously a good rebound defender so we've lost him and Kiddy (Keidean Coleman) in the last two weeks

"I think Tom Doedee's available to play in the next week or two."

Brisbane will now rest during their early season bye before returning to the Gabba for a Round 3 Thursday night rematch against the reigning premiers.