You only get Pinnacle/powerful drops once per week per character class, not per character. If you got a nightfall from on your first one, subsequent runs on the same character type won't grant additional rewards.
I'm not sure what "F" means, but you can not get a pinnacle drop from the same activity twice with the same class. Your first hunter got the Nightfall pinnacle drop, which is the only one you can get as a hunter, for the entire week. Your second hunter was never going to get a pinnacle drop from the Nightfall, so there is no 965 item for you to get back.