I may have missed this elsewhere

When I use a pulley to setup a mechanical advantage and hence reduce load on the winch, do I also reduce the load on the rope/shackles/pulleys?

For instance, say I'm doing a 3T winch pull, with no pulley it's 3T on the winch, rope, straps. With a pulley involved, it's 1.5T on the winch, is it also 1.5T on everything else?