"I think you have agreed that walking is not dancing."
TOTAL MISCHARACTERIZATION!!!
The distinction I drew was between the exercise of nominal DANCE walks and actual dancing. These are not the same, as actual dancing adds many modifiers to the textbook exercise of a nominal "DANCE" walk.
However, there is still a lot of similarity between DANCE WALKS (the exercise) and everyday walks - and of course dancing itself. The differences are driving by the specific needs of each situation. Between dance walks and normal walks, the differences are largely driven by the footwear and type of ground (uneven ground or sticky soles and you have to pick up your feet higher). The difference between dances walks and actual dancing are driven by the needs of dance actions to evolve from one body situation to another, wheras the basic walk simply goes from one position to its exact mirror image on the other foot, and then back to the original position, with no evolution.
"The moving foot stays very close to the floor but it is not bearing any weight
Of course it isn't bearing any weight"
If it's not bearing any weight, then you have only one standing foot for balance...
"I was once told that if my front foot is moving and is off the floor the only time I am able to stop is only when the foot touches down."
Not true. If your weight (plus need to decelerate your forward momentum) has not commited your past the point in your foot where your toes can no longer carry your body weight, you can stop on that same standing foot. If you have commited past the strong part of your foot, then yes, you are going to have to arrive on the moving foot.
"If I have contact with the floor I can slow down or stop or accelerarate any time i wish."
Only by partially arriving on the moving foot. At which point you no longer have one standing foot, but two. I don't know about you, but I can put my moving foot down pretty darn quickly when I need to, even if it's "stepping over rocks and branches" height off a forest trail.
"Stand with one leg on the floor, your partner as well. I could cause you to lose your balance with the slightest pressure of my little finger. You only have momentum to keep you up"
That's ignorant physics... momentum can't keep you up.
As for the little push, sure. But dancing usually provides us the oportunity to take a graceful rebalancing step when an "accident" makes it necessary. If someone bumps you while you are in a raised line like a hover corte (most lines after all are lowered), you can just take a step into a new position and develop that.