The russians don't have a service like Ukraine's DELTA. This leads them to do drone video comms and other planning using subpar commercial grade solutions open to snooping if not configured correctly. Bet that channel and Yandex meetings were being analyzed carefully in Kyiv.
For nearly a year, a Russian motor rifle regiment used an open Telegram group to share classified army directives, drone login credentials, front-line coordinates, & personnel lists. The records acknowledge losses from poor supply & ineffective use of robotic systems, plus Starlink terminal use.