The phrase "acknowledged in passing" is correct and usable in written English.
It can be used to indicate that something was mentioned briefly or casually without going into detail.
Example: "The report acknowledged in passing the challenges faced by the team, but did not elaborate on them."
Alternatives: "mentioned briefly" or "noted casually".
Officials have already acknowledged in passing the existence of the facility in central Nevada where the government is believed to test intelligence tools and weapons.
Although he acknowledged in passing the chief conclusion of that report, that the threat from global warming is genuine, most of his statement dwelt on the lingering uncertainties.
While President Obama acknowledged in passing that the transition in Afghanistan "has to take place in a responsible fashion," he quickly changed course and began talking about veterans and jobs in America.
The bias was even more blatant in 2008/09, when Israel's massive assault on Gaza (which killed 1400+ Palestinians) was cast as self-defense, even though it was acknowledged in passing that Israel was the party that broke the ceasefire agreement in place at the time.
The discussion document acknowledges in passing "broader questions" about how assessments are carried out and whether the framework needs to be improved or replaced.
And so to hear an interviewee acknowledge – even in passing – that a journalist might actually have a skill set was an unexpected delight.
No birthdays are acknowledged in the passing of the year, so Leo might not know exactly how old he is, but he is single-minded, close-mouthed and observant.
In a second, more technical, blogpost published that same day, Facebook's Martin Luis Gomez and Andrew Cox acknowledged the failure in passing.
Network news broadcasts have not mentioned the House vote; their cable counterparts have acknowledged it only in passing.
But as Helm perhaps acknowledges by deferring in passing to biological constraints, we are not as unitary and governed by coherence among our feelings, desires, and evaluative judgments as he seems officially to propose.
Had the review acknowledged, even in passing, why the play could be disturbing or challenging to many Christians, even those who do not agree with the teachings of the Catholic Church, I think it would have left Donohue no ground to stand on, and he told me he would not have complained.
