To the last: My first taught experience was a 2nd grade teacher having us sing while she pointed to a solfege board. I internalized the major scale and natural minor scale, which in that system started on La. At age 8 I was given a little organ, and a book for adult learners - it was very diatonic (so same system) and for the most part in C major and A minor. I associated the notation with the aural patterns I'd learned. Thus a diagonal set of notes going line-space-line-space etc. described a scale, and "sounded like" a major scale. I "heard" that major scale from the page, and then played on the organ what I heard from the page. This "hearing" was in relative pitch, but I also knew where to find Do (usually C, or F, or G).
Later I was given a piano and a bit of music, especially a set of sonatinas - above all Clementi who is predictable, but all the music was pretty well diatonic. I stayed in my solfege world, and I kept hearing the music off the page. I thought everyone read music this way. As an adult I brought a song I loved to my violin teacher, and I didn't know why he brought it to the piano to find out how it sounded. Because I "heard it from the page".
I can also get confused by visual symmetry; what makes dyslexics confuse p b q d and cat vs tac but learned that later. I played in a tactile way, feeling for where the sound was.. When I first tried to look at my hands for technique I got confused by the symmetry of the keys and had to look away. So this thing people have, just wasn't there.
Otoh, there are people who can hear from the page in a way I can't. Chords and chord qualities aren't there much. I know someone who looks at a page and says "This part doesn't sound good." But that person also feels in their fingers what they see on the page.
This is OT to the topic, but goes to hearing and reading maybe.