It's my view, and I may be incorrect, that "hit vs. swing" doesn't start until release point. Both hits and swings are "pulled" until you get to your release point. Only from there will you continue to pull (drag) or hit (drive). I think this is why they both look similar...because they ARE similar until release.
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Hitting and Swinging are different... mostly in the way the Right Shoulder and Right Arm are used. Gyroscope/Passive Right Arm--Swinging Launching Pad/Active Right Arm-- Hitting
6-H-O is a good example of the differences.