People mask how they feel about an ongoing conversation and leave others unsure of whether to stop talking, so dialogues can carry on longer than desired, according to a study in the US
Source:
https://www.newscientist.com/article/2269497-conversations-go-on-too-long-because-people-are-too-polite-to-end-them/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home