I've been doing some research on this long fabled chronological live album. And I've found some pretty interesting quotes from Jimmy:
"We have so much good live stuff. We've got six live concerts on tape which were good nights. We've got some ancient stuff live at Royal Albert Hall in 1970. It's very interesting to listen to. You can compare different versions of tunes as they span the years. So a chronological live compilation is a thing I've always been keen on, but the soundtrack came out so it's been shelved for a while." Jimmy Page, 1976.
"It's an honest soundtrack live album, but a chronological live album is something I've always fancied. There's great stuff there and it takes us up to this year. There's a winning version of 'No Quarter' from Earls Court and from the Albert Hall 'I Can't Quit You Baby'. The 'How Many More Times' is also pretty good. It's great hearing those numbers that we'll probably never do again. We've also got numbers from Southampton University and some small clubs." Jimmy Page, 1977.
Source: https://books.google.com/books?id=SzgDAwAAQBAJ&pg=PT92&lpg=PT92&dq=led+zeppelin+chronological+live+album&source=bl&ots=kaZsb4dCEq&sig=29B2xCbrOq6b2vQOWLUDzHBtl90&hl=en&sa=X&ved=0ahUKEwjm0O2BsdPZAhVPY6wKHefSBjY4ChDoAQhZMAk#v=onepage&q=led zeppelin chronological live album&f=false
"Think of 1980 - It's The Song Remains The Same soundtrack or nothing. 1990 - The Song Remains The Same soundtrack or nothing. And now it's the same. I've always wanted to put out a chronological live album of Zeppelin stuff - there's some incredibly good stuff - but I just can't get the others to agree, so I've stopped trying." Jimmy Page Classic Rock, March 2000.
Source: https://books.google.com/books?id=jOzTNQk0C48C&pg=PT120&lpg=PT120&dq=led+zeppelin+chronological+live+album&source=bl&ots=UU93StkmN5&sig=z2DZXSdT1IbfSY3zmm6Bn_l2TbU&hl=en&sa=X&ved=0ahUKEwjJycTBwtTZAhUObK0KHabWBgY4ChDoAQhKMAY#v=onepage&q=led zeppelin chronological live album&f=false
Jimmy Page: I’d wanted to do a chronological live Zeppelin album since 1980, starting with tracks from the Albert Hall, but we could never get anyone to agree on anything. In retrospect, though, it was probably a good thing it took so long. It’s a great moment right now for something like this. Because of the digital technology we were able to use to restore these things it’s almost like going back in time. Albert Hall, for example, looks like it was recorded yesterday.
Source: http://teamrock.com/feature/2003-03-26/archive-led-zeppelin-live-without-a-net