I read it, very interesting thanks ! Well spotted.
I've never been too much into the recording / editing of On the night but yeah, just like the vast majority of us, I've always felt that the whole album didn't sound live at all - despite the fact that all the songs are very well played, maybe too well lol.
As for the Calling Elvis song, I would never have thought that they may have rebuilt the whole song with different recordings. Mixing various videos for one song is something that I've seen before on official DVDs from other artists, but "recreating" a song with various audio recordings is something that I don't like too much. Where's the authenticity in this, I don't know, but I suppose the idea was to offer a "perfect" concert for all the people who attended the show.