@honk I suspect that may be pushing the bounds of what may be currently doable with Audacity unless you explore the realms of plugins or create your own, possibly worth reaching out to the developers of audacity over at GitHub? (Certainly not a "quick" thing to develop unless someone happens to be working on this already)
Only other thing I can think of may be to explore other software options such as Vinyl studio or Pure vinyl. Probably not free and whether actually worth it is debatable.
Only other option I can think of is to ask a third party (or parties) to do the work on your behalf - again likely not cheap unless you have some really good friends 😁
Of course the purists might argue that you are moving away from the sense of the original recording (one long track) but I can wholly appropriate why you want to do it. I do feel your pain though, just sorry I don't have any easier answers 😕
@honk Haven't tried myself but maybe scope to use a "label" track and export multiple? manual.audacityteam.org/man/ex…
You may have some degree of success in auto labelling depending on the audio and threshold levels bytefreaks.net/applications/au…