Kenwood: dining room?

Having obsessively picked apart Joe Baiardi's Kenwood video, the only bit left now is the second pic here. Assuming this was shot in the dining room, then that would tend to confirm the hypothesis that the pic with Cynthia and Julian was also taken there - that doorway looks identical to me. However, the wall clearly isn't identical, which is possibly down to renovation, and, equally, possibly not. Until a complete set of plans from the Lennon era turns up, all this amounts to nothing more (or less) than havering, which is a polite Scottish word for what it amounts to.