I want to believe that Alduin is still the Nords version of of akatosh. I think there's still somethings we're missing here.
With the nords, even the stormcloaks, now having a more imperialized religion, how does alduin still fit in? If the old beliefs faded completely, wold ald exist at all?
Also the part about breaking into the thalmoor embassy seems to be a bit tacked on. Is it just to reinforce that alduin is not auriel?
How can ald be firstborn of aka without actually being aka?
I was hoping for a little closure and confirmation at the end of the MQ, but I guess it wouldn't be an elder scrolls game if that was the case