"This is comlex. So if the body is moving in a certain direction on three our step on four must go where the body is moving which may not be down the LOD. For it to go down the LOD we would have to plan our swing and sway in a way to make this happen?"
Yes, you plan step 1 and 2 so that step three lowers with the body moving down LOD.
That means step four is placed down the LOD. You plan step four and step five so that the body lowers with step 6 moving to DC.
"But since this is not a change of direction in the NT We will change our Body orientation when dancing a closed change after the NT."
The closed change is different. While 3/8 turning figures have steps 1 and 2 continuing the direction the previous step 3, the closed changes, and the underturned natural or reverse making 1/4 turn, will change the direction of movement after step 1, so that step 2 moves in a new direction. For purposes of figuring out directions in the room, it matters not that the body turns in the underturned turns and not in the closed change.