What docks do you have? Might bite the bullet and just get one, in retrospect I should’ve just waited to see what would definitely work.
Nevertheless, I do appreciate the suggestions from everyone! Definitely didn’t think to try it with another display, oops
Just a follow up to say thanks, that dock worked right out of the box! Almost bizarre to see it flash up on the TV immediately, guess that’s the nature of sheer hardware combinations out there. Cheers again