vaderios, after digging around a little, it does seem that as far as some of the 'Executor' Bridge 'interior' shots are concerned, that it is a little tricky to work out if there should be a little of the hull showing through the 'windows' or not.

As the shots above show, the hull is certainly wide on either side of the Bridge Tower....but I still think that the way the hull is 'angled' downwards, combined with the 'eye-level', close-up camera angles through the 'windows' you've shown, allows for us not to see any of it. I don't know if that's the case with any 'JEDI' angles though, without seeing a screenshot of where you mean.

On the other hand, you could be right, as from what I can gather, it seems the positioning of the actual 'Executor' Bridge is a little unclear according to some of the info. in the link below. I'll be interested to see what Adywan decides on this himself, eventually.

This resource has masses of photos and details, and I've only gone through a fraction of it, so I'm not sure how much is speculation. There seems to be a lot of interesting stuff here though, for anyone that wades through it -

http://www.theforce.net/swtc/ssd.html