Australia's Adam Zampa let team-mate Matthew Wade off the hook after the wicketkeeper failed to take a catch that would have brought up a hat-trick against Bangladesh.
Zampa starred with the ball on Thursday, taking 5-19 as Australia skittled Bangladesh out for just 73.
It was the fourth-lowest total of the T20 World Cup so far, with Zampa taking five wickets in the format for the first time.
Indeed, it is only the second time an Australia player has taken a five-for in a T20 World Cup match, after James Faulkner (5-27 v Pakistan, 2016).
However, Zampa's day could have been even better had Wade held on to an edge by Taskin Ahmed, but the wicketkeeper could only get his fingertips on the ball.
Three overs had passed since Zampa dismissed Shamim Hossain and Mahedi Hasan, however, and the spinner joked that perhaps only he knew that a hat-trick was on the cards.
"It's a pretty nice feeling, I've been playing five or six years now and that one had eluded me," Zampa said at the post-match presentation.
"I think I had like three overs between my [second] wicket and the next ball, so I don't know if anyone knew, I thought I was the only one that knew!
"If it wasn't for Wadey's hands at the moment then I wouldn't have as many wickets as I do. It was a tough catch but just happy to have taken five to be honest."
Australia surpassed the target with ease, Mitchell Marsh hitting a huge six to settle the contest after only 6.2 overs of the chase.
Captain Aaron Finch top-scored with 40 from 20 balls, a total that included four sixes and two boundaries at a strike rate of 200.
Finch, whose side moved above South Africa into second place in Group 1, as the qualification battle goes down to the wire, spoke of "a really clinical performance".
He added: "We thought we would take the opportunity to win big if we got the chance, but you can't plan for that. At the halfway mark, we knew we could get past South Africa.
"When you have that opportunity, you have to take it. Zampa's five for 19 was outstanding."