Those are two different objects with different meanings, histories, purposes and whatnot, which just happen to have the same basic shape, because the latter was inspired by the former.
BTW you’re wrong, for example F-22 prototypes still have designation YF-22 even after the Raptor had entered serial production.

No, but to put it another way what you are doing here is arguing that if someone drew a picture of the YT-2400 then he totally drew a picture of the YT-1300 (class MF belonged to), because for both ships their main section looks like roundish platters stacked on top of each other (and even has same vents!), they have…

No dude, I’ve been a HW fan since forever and know my lore, including what the HW2 was supposed to have been before they rebooted it. You on the other hand seem not to, confusing Port of Nalthor with the Bentusi flagship. They are two distinct - if visually similar in some concept arts - things.

That’s not even the Bentusi Ship, it’s one of the designs for Nalthoran orbital port from the HW2: Dustwars era, the one game still had megaliths and all, before they scrapped it and rushed HW2 as we know it.