I did not read much , might look more into this on weekend but may be https://www.sphinx-doc.org/en/master/usage/extensions/intersphinx.html can do the magic for us , might need to tweak the things little not sure
Bug 1650197 Comment 1 Edit History
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Awesome idea kudos , may be we can look into the irc bot we had on irc.m.o , it might be a little help I did not read much , look more into this on weekend but may be https://www.sphinx-doc.org/en/master/usage/extensions/intersphinx.html can do the magic for us , might need to tweak the things little not sure