We report the identification of two galaxy overdensities at z\sim5.7 in the sightline of the galaxy cluster Abell 2744. These overdensities consist of 25 and 17 member galaxies, spectroscopically confirmed with JWST NIRSpec/MSA and NIRCam/WFSS. Each overdensity has a total stellar mass of \sim2\times10^{10} M_\odot and a star formation rate... Show more