@BrandonInOhioWhile in highschool I could recite the epic poem "LΔΔuplΔsis" in its entirety (it consists of about 19k words, 4200 verses in 6 cantos).
I can generally pull contextual citations without looking them up from just about any text I have read recently. However, regenerated excerpts of prose usually wouldn't be of guaranteed accuracy, not unlike the way LLMs do it: words can get substituted with synonyms and the like. Reading in foreign language I can generally comprehend texts that contain up to 15% of unknown words by simply inferring possible meaning of those words from context. I easily catch inconsistencies like drifting character names; at the same time such don't distract me much... and a few weeks later I may struggle to name the characters, sometimes even the main character. I remember structures not wording.
So yes, I'm not good at remembering titles and am outright terrible at remembering author names. Made somewhat even worse by me internally using Latvian phonetic alphabet to parse any Latin script texts including English. But if I had found of importance a fact two stories are of the same author, I may retain that fact far more easily than their name.
Dreamlike collusion of different stories? Oh, of course, such happens, quite easily. Human memory is malleable, and is rewritten every time you recall it, using current context clues to rebuild it in the most efficient manner. I wrote a diary throughout the dissolution of USSR (1987-1996, 11 to 20 years old) and given I had read Orvel and recognized I'm living the 1984, I didn't commit to paper anything I wouldn't publish and stand to it. Instead I included context clues, confident I will remember what I didn't write. Mostly I still do. I do often indulge in historical-political debates about the time, with the high confidence of eyewitness and survivor. Alas, I discovered I couldn't accurately date some things, so I made a review of my own notes crosscheck with newspaper excerpts... oh my! I had fallen for my own propaganda, big time. I wad propagating mythology. All despite I was acutely aware people do completely overhaul own past beliefs without noticing, uad seen that in people close to me on several occasions.
So, no, remembering ideas rather than exact quotes is normal. Cross-linking themes is normal. Severity of not remembering author may be or not at of concern depend on your memory model. If you used to recall tables of literals easily and find unable anymore, it may indicate a problem.