As a mere point of clarification, there have been some in the past that have conflated the two to an extent. Something on the lines that developing distance awareness, timing, speed, and power will help you in any setting, including SD.
There's a lot of truth to that statement by the way, but the people who insist that you are what you train have a sound argument too. Anyway, not really interested in arguing the sport vs. sd thing, so bowing out if anyone wants to discuss that particular tangent.
Agree. There are also elements of rugby, football, squash etc that can help you with SD, for example the ability to coordinate your limbs independently and footwork. Yeah the sport/SD thing is done, I just wanted to make clear that WTF sport and KKW TKD are not necessarily one and the same. I'm done now.