All physical capacities are connected. You can emphasize one in a session but there will be an effect on all others. For example, many advocate training an energy system, labeling a workout anaerobic alactate. when physiologically this is impossible. You cannot isolate energy systems. They all work together with differing contributions depending on the activity’s duration and intensity. Rather than trying to isolate learn to connect the dots. I have found it helpful to think of training tasks and physical capacities as either compatible or complementary. If they are compatible, they work closely together. If they are complementary, they enhance each other. That interplay will optimize training by connecting the dots.