Ha, well this is getting deep into weeds of textual analysis, but @jesus2099 has the clearest reference in his link to hidden tracks above: “A hidden track can mean: […] one or more songs that follow another song on the same track, usually after a longer period of silence, but are not listed on the sleeve.”
I also see hints from other pages such as titles which mentions: “a track includes two or more songs” as an occasion for the title to be split. It doesn’t flat out say this should override the artist’s title, but I thin it suggests it.
@jesus2099’s reference shows to me that this is an exceptional use of terms. It refers to a track inside a track, which I don’t think is an intuitive way of doing it.
Again, if it’s open to discussion I personally would say that’s a hidden song, not a hidden track, and follow artist intent for the track name. Either way, there is room for more clarity in the documentation.