Translation:The brothers-in-law and the sisters-in-law talk.
can't one simply write brothers- and sisters-in-law? And this is no clutter stop this annoying red comment :(
I'm English and that is what I would say but i have learned to be as literal as possible when translating on Dl!
It was not accepted for me either 21st June 2018. I wonder if it is because I left out the second definite article