For context, they were able to distinguish enemies at one point with red outlines through walls and allies as gray. How does this work and how is it possible?

I'm ranked in bronze 3 at the moment and I play a lot of Omen at the moment, I swear all I see is instalock Reyna's trying to hard carry on both teams, wish people would be more diverse with their duelist choices. Edit: making an edit abou...