The meaning of "on the same page" is:
The definition of "on the same page" is:
(idiom) to agree on something
I work really well with Samantha, because the two of us are on the same page. We agree on almost everything!
Boss: So we need to try and save money, or our company will close. Will you be able to help me do this?
Employees: Sure, boss.
Boss: I’m glad we’re all on the same page then. Half of you are fired.
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