No need to apologize for your misunderstanding, im here to help. Hands inside the ball IS a cue for direct hand path and at the same time describes what should occur in a swing. Not changing the conversation. The cue aligns with the action. The same cant be said for knob to the ball. I dont like knob to the ball.
Speaking of changing the conversation lol, how should the ball spin off the tee? Haha
In my experience, kids already understand that their hands need to be inside the ball to deliver the barrel to the contact point. That part is implied and understood. I haven't (yet) had a kid take a "hands direct to the ball" cue so literally that the ball hits them in the hands. My use of the cue is also used in relation to hand path direction at the beginning part of the Mig clip posted earlier, as a correction for dropping/looping. For me, it has been effective when I have needed it. If "hands inside the ball" gets the job done for you, cool. Not every kid learns the same way.
I think the ball spin thing was already covered.