Well, based on the footage edited back into the Saga, and the stuff edited into the beginning of Part III for television, one thing is certain: there was footage shot on the Kaiser estate, wich doubled for the Corleone compound in the film, that involved Al Pacino and at least one actress, which may or may not be Talia Shire but could simply be a maid or somebody taking away his lunch. Pacino sits, in the slightly-aged makeup, in a chair before a table and several other chairs (seen only in the Part III TV opening), sometimes smoking, sometimes just sitting, deep in thought and fatigued. t appears to be daytime, though the scene as shown in the end of Part II almost looks dark. There are some extras in the distant background, possibly meant to be guards. We don't know who on the crew was present to shoot the footage, but it is certain that Coppola was there.

Seems to me that if there IS a complete DVD release, perhaps an unedited reel of all this footage should be added in its own supplemental section.