GAW -“Then take that to the PATH @ WTC”
The “A” doesn’t go to WTC. Only the “E” ends at the WTC.
You can walk underground from the Chambers St. stop – first to the 2&3 station @ Park Place and then onto the “E” station at WTC.
What I’ve done is gotten out at the Fulton St. Station (make sure you’re at the far west side) and walked a block above ground west to the WTC.