Normally you'll only change one gear at a time unless your changing chainrings.
Then it could be 2 or 3 gears depending on the overlap between chainrings.
So it's change gear, shift your hand on the grip a little, change gear, shift your hand, etc, etc.
So you'll almost never go from one end of the twist shift to the other in one twist.
I can only twist shift 4 gears out of my 14 Rohloff gears in one movement.
To get any more gears I must reposition my hand.
So to 1 to 14 in the minimum number of moves takes me 4 twists and 3 hand shifts.
Luck ..........
