It is unfortunate that the conversation has devolved in this way. To answer via a recap: @tangs was dismissing the current Russian gains as insignificant in comparison to the AFU 2022 efforts. They also ridiculed the idea it was due to Russia falling back to more defensive positions. So I am asking why such advances are unable to be replicated since, if it wasn't due to Russia falling back? You can have an attempt at this question too.
