Why Lightning protection works by keeping everything in the station at the same potential during a strike, so every ground rod, the electrical service ground, and the tower and entry-panel grounds must be bonded together into one single-point ground system. If two ground systems are separate, a surge can raise one thousands of volts above the other and the difference flashes through your equipment. The National Electrical Code (Article 250) requires this bonding of all grounding electrodes at a structure.
Watch out The choice about right-angle bends states the opposite of good practice: sharp bends add inductance and let the surge jump off the conductor, so ground wires should use gentle, sweeping bends.
One station, one ground: bond every rod and ground together, and keep ground wire bends gentle, never sharp.