The Reference Desk/Unit 190 in Gallifrey: Forever

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The Gallifrey audio Forever features Unit 190, aka Sura, who appears to be the counterpart to Susan Foreman on that story's alternate Gallifrey. However, it's been a while since I've listened to it; how obvious is the Susan connection made in the story? Is there anything which gets in the way of it being an obvious enough connection to note in Susan and Sura's articles, and the Forever article?