Is There a Kink in the Pipe on the Speed Endurance?

The way I like to frame this, and I think I've mentioned this analogy is it's like the kink in the pipe, right? Or the fork in the road. Yeah, it's like where is that? And it will change based on the athletes. It's not the speed quote unquote gap. It's the endurance and the extension. So I need to figure out where the kinkin in the pipe is on the extension. Individualization really matters in understanding what kind of athlete do I have which determines whether I focus on speed, endurance or speed endurance.