Found my old Live and Let Die TBS broadcast from 1991. It appears to be a mix of Open Matte and Pan and Scan. Here’s a few comparison shots. (the 1.78:1 blu ray is the Blue rectangle) Some of the movie has more info on top and bottom. Some of it (shown in the 4th screenshot) is just pan and scan: 
There’s also several spots were you can see the literal top of the frame/matte
Looks like a 1.66:1 version of either movies would be the most “open” release
Also like my laserdiscs, shoot me a pm if you want an MP4 of the broadcast