Rock-Steady Filtration of Undulating Oscillations is my Simple Analysis of Barbosa and Leal.

Barbosa and Leal effectively create oscillations within the Earth between two sets of grounding rods, and then transfers this contribution upwards, above ground, to the circuitry of the Captor Loop's two transformers whose job is to clean up the undulating values of the Earth's oscillations into rock-steady power for our appliances (which we've come to expect of our power source). So, we could have used Eric Dollard's LMD module to bypass any need for utilizing the Earth by just powering up at least one LMD module. But not without passing that energy through the circuitry of B&L to clean it up and stabilize it for a load.