on the same page

be on the same page (talk about the same issue; look at a problem or a situation in the same way and agree on a course of action ) — говорить об одном и том же; сходиться во взглядах или мнениях; иметь общие взгляды на; не иметь разногласий; не иметь противоречий

Example: I just want to make sure that we are on the same page in terms of what that means.
Example: Before we make any decisions today, I'd like to make sure that everyone is on the same page. — ...убедиться, что мы все понимаем / представляем положение дел.

see also
[see eye to eye with sb]
[on the same wavelength]
[sing from the same hymn sheet]