Adding pool heater to bonding of pump, salt generator, and timer

I just recently installed a heater and on the bonding lug my installer ran a green wire back inside the heater to the metal.

I could have sworn that they were supposed to run a wire from the bonding lug to join the other wire that is hooked to my pump, generator, and timer/thermostat. There is an existing bare copper wire ran from the ground through pump, to Salt generator, and back through my timer/thermostat.

Can someone look at these photos and tell me how this is usually done to give me an idea?

I know for a fact when building the pool there was copper wire ran all the way arond the pool, the hand rails, ladder, and light niche so that part should be fine.

Just wanted to make sure i am tying into this with the heater and being safe.