I did a thorough analysis of the video and audio of Calling Elvis from On the Night and I even shared this article here on the forum once, but in summary:
1- For the video they used scenes from Nimes and Rotterdam, it is a montage, despite them wearing the same clothes, the secret is in the microphones on Mark's pedestal, as there are two microphones, the filming is in Rotterdam, when the scene shows the stand with a microphone, filming is in Nimes. I believe that a second microphone was placed on Mark's stand to better capture the instrument, perhaps through the PA return to the band, as this show was being recorded in a football stadium, (some sound engineer must have given this tip at the time)
2- As for the audio, what is noticeable is that the track in its entirety, just like the video, is a lot of editing work, excerpts from different shows, between Nimes and Rotterdam and excerpts of guitar licks that are not in any of the bootleg recordings we have. Until that moment when Mark does the first guitar link in the intro, he greets the audience with something like, "alright", it never happened like that, in no show I know does he do it like that, it's an overdub, that is, the package is very Frankenstein.