> So you can have voltage without current, but not current without voltage.
Picking nits again: your first statement implies an Infinite resistance, so why deny the second which implies a Zero resistance?
Neither is possible in practice. If I leave a 9V battery on the bench, a few electrons flow through the air. If I get some electrons flowing in a wire, and kill the voltage, they soon stop.
But we can show near-zero/infinite resistances experimentally. In particular, a superconducting coil can continue to flow current for hours after the EMF is removed. Current without voltage.
Showing near-zero current, even in good vacuum, mires us in surface-leakage effects, though we can probably show no electrons for many minutes.
Asking if we can get closer to infinity than to zero is probably fruitless.
I'd put it: "we can have voltage without current, AND current without voltage, but only in our dreams, never on the workbench".
> can current and voltage share the same path
The question makes no sense.
Voltage only has meaning between two points. Current only has meaning through one point.
The "second point" in a voltage measurement may be "implied". Same thing with pressure. What is the pressure inside your water pipes? A gauge may show "30PSI", but compared to what? Normally, compared to atmospheric pressure, 15PSI. In some cases, compared to zero pressure (unlike voltage, pressure does have an absolute zero). In a special case, compared to some other pressure: if you are a deep sea diver working in 50PSI water and air, and we send you some "30PSI" water to drink, you would measure -20PSI and not be able to get any water.