Though I do not have a transcript of their probably private conversation, the Extended ROTK and ROTS endings have a very similar feel and flow, unless you’ve never seen the former, I’m sure others here know what I’m talking about.
http://www.starwars.com/news/the-cinema-behind-star-wars-the-lord-of-the-rings
http://www.thelandofshadow.com/peter-jackson-shares-his-honest-thoughts-about-george-lucas/