So I’ve watched the Italian broadcast and here’s my personal opinion of this particular version: it’s a fullframe 16mm print that’s been cut up, rearranged and shortened. All of the changes have tape splices and judging by the size they appear on the image, they’ve been done to a 16mm print. All of this points to an unofficial version done by perhaps the TV studio.
Here are the changes I’ve noticed compared to the 35mm print (after the obvious changes to the beginning):
At around the 11:30 mark, LUH says ‘THX is that you?’ and she appears from around the corner and then, it cuts to her info text screen. In the 35mm version, it goes from this shot of her coming around the corner to the medicinal cabinet security shot to a shot of a man at a surveillance station and then her text info.
At around 14:52; they cut out a shot of LUH with her face to a wall that cross fades into the nuns walking. In the broadcast version, it goes from a shot of LUH watching the hologram to the nuns halfway through the corridor. Again, there is that tape splice.
At around 15:40, there’s a splice after THX’s second ‘confession’. It’s missing a longer shot of him throwing up.
At around 19:15: Splice! Goes from the men jogging to the malfunctioning guard. Missing two shots: the man looking out the window and the man staring at numbers.
At around 20:46: There’s a minute and 20 seconds spliced out after THX and LUH have their talk in the crowd. It’s missing a surveillance shot and shots of THX at home before deciding to investigate over at SEN’s place. Again, tape splice.
At 23:12: Another tape splice. Missing shots: LUH asking for THX (“Tex??”) and then shots of them praying to the Jedi-monk hologram.
At 24:33. Tape Splice. Weird shower shot is cut.
(subtitle spelling mistake: ‘You’re loosing it’ should be: You’re losing it)
After THX’s arrest, the shot order of this section in the Italian Broadcast matches that of the 35mm and the 16mm.
I stopped here since we don’t have the rest of the film.
Nice detective work! For additional info on the Italian TV-Broadcast DVD, see my old detective work here: http://originaltrilogy.com/forum/topic.cfm/THX-1138-preservations/post/588049/#TopicPost588049