Here are three articles on people communicating thru their dreams:

1. Two people communicate in dreams: Inception movie-styled sci-fi turned into reality - https://interestingengineering.com/science/two-humans-communicate-in-dreams-remspace

Participants were sleeping at their homes when their brain waves and other polysomnographic data were tracked remotely by a specially developed apparatus

2. Two people communicate in dreams: Inception movie-styled sci-fi turned into reality | Participants were sleeping at their homes when their brain waves and other polysomnographic data were tracked remotely by a specially developed apparatus - https://www.reddit.com/r/tech/comments/1g2nc19/two_people_communicate_in_dreams_inception/?rdt=56022

3. Potential breakthrough as scientists claim two people communicated in their DREAMS in world first - https://www.dailymail.co.uk/sciencetech/article-13950653/scientists-inception-two-way-dream-communication-study.html

Scientists have brought science fiction one step closer to reality by achieving the first two-way communication between individuals during lucid dreaming.

In an experiment that sounds like a scene out of the movie 'Inception,' REMspace - a California-based startup that designs technology to enhance sleep and lucid dreaming - reportedly exchanged a message between two people who were asleep.