Keep in the loop
English Idiom
Meaning: To ensure someone is informed or updated about all the important developments in a situation or project. It's about making sure no one is left out of the communication chain.
Origin: The idiom 'keep in the loop' likely originates from the early days of telecommunications and military communication, where being 'in the loop' meant being part of a secure, closed circuit of communication. This ensured that all members had access to the same information.
