on the same page

Từ điển Oxford Advanced Learner 8th

on the same ˈpage idiom
(especially NAmE)if two or more people or groups are on the same page, they agree about what they are trying to achieve
•Are employers and employees on the same page when it comes to retirement benefits?
•It was an effort to get us all on the same page.
Main entry: ↑page_idiom