The phrase "main liaison" refers to a person or a group that acts as the primary connection or link between two separate parties. They facilitate communication and ensure smooth interaction between these parties. Full definition
Coordinated meetings with other department managers and served as main liaison between sales and engineering staff. (jobhero.com)
Coordinated meetings with other department managers and served as main liaison for solutions to issues that occur within the work spaces. (livecareer.com)
Acting as main liaison between client and all necessary parties, from beginning site tours to post-event meetings (jobhero.com)