I am installing my first service in NYC and I am getting some conflicting information on how to bond and ground the panels. This is a two family home with one service drop. The drop enters both meters and the panels are chase nippled on top of each meter. I attached a sketch to help explain myself. Could someone please explain to me the path the bonding wire needs to take. I have also been told I need to bring the supplemental grounding electrode (ground rod) and water main ground in to both panels and put the bonding screw in both as well. All help is greatly appreciated. Thank You.