The phrase "a broader gathering of" is correct and usable in written English.
It can be used when referring to a larger or more inclusive assembly of people or things, often in a context of discussion or collaboration.
Example: "The conference aims to facilitate a broader gathering of experts from various fields to share their insights."
Alternatives: "a wider assembly of" or "a larger collection of".
In 1986, the pope sponsored a broad gathering of leaders of all the major religions at Assisi.
1 Iraqi Sunnis Pledge Alliance In a stark reversal, a broad gathering of Sunni Arab sheiks, clerics and political leaders formed a political alliance, seeking to gain back the ground lost to Shiites in the last election.
First, a small but broad gathering of local leaders, held perhaps in some Gulf city, to set up a provisional "council"—not even a government which, in time, would call a loyajirga, a grand tribal gathering, to pick a new head of state and organise a new, transitional government to run the country for perhaps two years.
The luncheon on Thursday was an even broader gathering, with representatives of scores of companies as well as foreign policy and trade experts.
This kind of analysis is already used to track down terrorists and organized crime, but when wedded to a broader strategy of intelligence gathering and influence, could be quite powerful.
Further, as this was, to our best knowledge, the first controlled trial of stimulants for ADHD, conducted within a prison setting, we aimed at gathering a broader range of information regarding treatment effects.
The White House informed a leading Democratic lawmaker, Senator Dianne Feinstein of California, of its plans, which grew out of a broader internal review of intelligence-gathering methods, prompted by the leak of N.S.A. documents by a former contractor, Edward J. Snowden.
"Paul is the first person to identify families of color on such a broad scope," gathering material from entire states rather than just a county or two.
This work proposes a complete methodology to estimate dust source terms starting from a broad information gathering.
Such patients will have a broader range of sources from which they are gathering information and will be able to come to a more informed decision on whether or not they want to consent to the procedure.
