How do 7 of 9 remember Zefram Cochrane’s ship, the Borg Queen, and various other topics?
Seven of Nine could of been on the Enterprise E and then just transported herself to another borg ship or when she was talking to Tuvok about death she mentioned that every Borg’s memory is kept and remembered so this could mean that all the borg though time are linked no matter where they are, unless your name is Hue, Picard/Locutus, or 7 of 9 and you managed to break the link with the borg.