How many grounds

I just got finished removing my old gas tank. A long time ago I remember reading posts where people talked about a ground from the tank so the sending unit could complete a circuit to the gas gauge. I didn't see any extra grounding on my tank.

However, as I look at new parts for the tank, it looks like there is a metal clip called a "grounding strap." My guess is that it clips to the sending unit outlet tube, spans the neoprene connector, and then clips to the steel fuel line that goes to the pump. That line is very connected to the frame.