Q. If five already davened and five need to daven, should one inform them that there are not six mispallelim or better not to say anything as it will lead to machlokes and upset feelings and frustration over not having a minyan (where it is hard to find a sixth person who didn’t daven)?
A. Horav Shlomo Miller Shlit’a mentioned that since it is possible that one of the five who already took part on the earlier minyan, may not have had kavana (intention) when davening the first brocho of the Amida and that is why he is davening again, he should avoid creating a machlokes.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller and Horav Aharon Miller Shlit’a