Somewhere early. It’s only off by a frame, so it makes sense that you would have not noticed it. It can be remuxed with a sync offset to fix.
Actually the frame difference between PAL and NTSC GOUT is at around 1:44:24, so the reason nobody notices it is that it’s a one-frame difference, it affects only a small section of the film, and that section has very little dialogue (which is the easiest way to spot small sync problems). Muxing the audio one frame off would actually make sync worse for most of the film, and you’d be more likely to notice it.
Are you discussing SW or ESB? I was referring to ESB, and the time stamp you’ve stated sounds more like the SW imperfection as of 2.5 (fixed in 2.7), but I don’t recall the exact point off the top of my head.
My understanding (and seemingly everyone else’s at the time) was that ESB was off by a frame very early on.