in the loop

Từ điển Oxford Advanced Learner 8th

in the ˈloop | out of the ˈloop idiom
(informal)part of a group of people that is dealing with sth important; not part of this group
•A lot of people want to be in the loop on this operation.
•Lawton had gradually been cut out of the loop on legal reviews.
Main entry: ↑loop_idiom