well, for whatever it is worth, the runtime of the non-extended cut which is available for streaming is equal to the runtime the article mentions as the full length version (229 minutes)

As I said, I saw it a long time ago (and I'm no movie expert), but me and the friend who watched it with me agreed the 229 minute version was pretty good but could have been better with some editing to cut the run time... though we didn't have the Cannes version to compare it to (or the knowledge that that version existed)

edit: oops, I guess the theatrical version, not the Cannes version.