Marcia became royally displeased when Logan started to be clumsily open about his affair with business go-between Rhea, and she disappeared for a couple of episodes.

Source: https://www.standard.co.uk/culture/tvfilm/succession-season-4-questions-what-will-happen-b1064267.html

The author is the natural go-between of those two worlds.

Source: https://triblive.com/aande/books/t-j-newman-returns-with-a-novel-thats-on-par-with-summer-movie-blockbusters/

“We were all blindsided by this,” Mayor Robb Bell said of Denning’s arrest on federal charges of acting as a go-between for drug purchases.

Source: https://triblive.com/local/westmoreland/greensburg-enlists-state-association-to-help-select-new-police-chief-hires-2-patrolmen/