Below is a preview ticket for United Artists employees. Below it is the same ticket before I removed all the writing.

The writing above says "Talked too John.... after performance at 1 pm." Also "4 hours with intermission". That would make the length of the movie no longer than 4 hours including the intermission.  The review has it listed as 221 minutes plus intermission. A 15 minute intermission would make the total length 236 minutes.