4-44-4: "...when neither foot can be a pivot"

[Freddy]

A deep dive into Rule 4-44 TRAVELING leads me to an issue in 4-44-4b. There it says, "After coming to a stop when neither foot can be a pivot: Neither foot may be lifted before the ball is released to start a dribble."

I've always considered the two references above this in 4-44-2a3. and 4-44-2b2 above, both of which also contain the phrase, "Neither foot can be a pivot in this case" to be directly applicable to what we popularly call a "Jump Stop" and therefore think "Jump Stop" when trying to understand 4-44-4, where I see how 4-44-4a makes sense, but not 4-44-4b.

QUESTIONS:
1. Is it correct that 4-44-2a3 and 4-44-2b2 describe what is popularly called a "Jump Stop"?
2. Does 4-44-4, therefore, apply ONLY to when a Jump Stop is executed? Or are there other situations applicable to this specific rule?
3. Reason for my last question is that I'm having a hard time imagining a Jump Stop needing the additional restriction in 4-44-4b, "Neither foot may be lifted before the ball is released to start a dribble." How can a dribble possibly be started after a Jump Stop?

Anybody with a little time to delve into the depths of what I'm trying to solve here willing to help me on this?