My box cycle just arrived and I wanted to audit these timings. Weirdly enough, on the website link in the first post on this topic, the total timing for the symphony is listed at 104'07 which isn't the sum of the movement timings in the image—and that image comes from the back of the CD case. HOWEVER, in the M3 booklet itself, it lists the same timings—the ones sans added silence—but has the correct, revised timing of 103'19.
The 104'07 sum comes from the timings of the digital files as seen on Presto, streaming services, etc.
If anyone is curious, the booklets for each CD do indeed have the revised, sans silence timings for each movement and the whole recording.