Gone now. Back to Division, Brigade and so no BTGs.
Talk to any Russian Mil officer and ask about BTG, and they will look at you funny. Never heard of them they would reply, despite what you imagine.
The putative BTG structure does not exist as found in Mechanized Infantry Brigades.
Ever since this conflict began, Russian units have been called BTGs, not divsions. Their reported sizes and command and control matches battalion size, not divsion size.
This is not a semantic differnce. It affects the command, control and logistics. This distinction affects how to interpret how well the Russian army is functioning.