You can interact with the player that killed you within the NLR timer. Never saw you ingame so

Rules state you cannot break NLR which includes interacting with your past life. If you died at banker while trying to arrest someone and see them going to PD District and you run to PD and arrest him that'd interacting with your past life. You can not interact with your past life even if it branches to a player unless it's unintentional (i.e they attack you or you see them commit a crime or see them somewhere else without intentionally going to their nearest last known location.