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Bowie and Bolan links.
Bolan played guitar on Bowie's "single" version of "The Prettiest Star", not the album cut on Aladdin Sane.
Also Bowie was the last ever guest on "Marc", Bolans TV show in 1977, just before he died.
Bowie played Heroes live and "jammed" with Bolan on what has become known as "Bolan Jam". It is widely available on bootlegs, but really is little more than noise.
Also it is rumoured that they collaborated on a song called A Lad in Vain. Again, the song is only a bootleg and Bowie has denied Bolan's participation.
Both had Tony Visconti as producer and shared a studio. Let's hope one day the archives are unearthed and some collaboratory material is found.
PS, they also played "The Marquee" in London on the same bill. But no reports of them being together.
Hope this helps.