The phrase "while commenting on" is correct and usable in written English.
It is typically used to introduce someone's comments or views on a particular topic or issue. Example: While commenting on the latest political developments, the journalist expressed her concern for the future of the country.
In the evening she enjoyed a dinner of grey sole, zucchini seasoned with cinnamon, and oven-roasted potatoes, all the while commenting on how delicious everything was.
While commenting on Song, MSNs 2009 cover story on the series stated, "Song is one of the main reasons why the "Suite Life" franchise remains one of the most successful and highly rated series in the Disney stable".
We parse her record while commenting on the shade of her lipstick.
The courts have often discarded the rule while commenting on crowded dockets and long delays preceding trial.
But Tord Boontje is restoring romance to the concept, while commenting on the creative potential sparked by a desolate economy.
The play satirises attitudes towards food poverty and the "feckless poor" while commenting on our obsession with reality TV.
Our purpose is to highlight some of the past and potential future uses of microarray in nutrition research, while also commenting on some aspects of the design conduct and analysis of microarray data that will leave to improved data quality.
Each work focuses on the artist in miniature while also commenting on the wider world, highlighting Mr Franzen's often cranky opinions.
Her lawyer, Greg Skordas, while not commenting on specific arrests, said that the allegations were overblown and that the overwhelming majority of her arrests had stood up in court.
While not commenting on past problems, Mr. Beaton said it was time to bring Argenbright up to the higher standards of European airports.
While not commenting on that case, Cash is grim-faced when he emphasises the need for the planned 24-hour services to come with greater staffing levels.
