Taking our experience of time... this is how I understand what Kant is saying.
There's this non-temporal manifold of sensation. I am picturing it like the pages of a flipbook. Images in succession which have yet to be tied together or animated. The form of sensibility, time, then organizes this flipbook into a temporal flow of events.
Now I am never conscious of this non-temporal manifold. Why does Kant think there is ever such a thing?
All I really know about is the temporal manifold (events ordered in time). What are Kant's justifications for how there's a non-temporal manifold that gets synthesized by the mind etc.
If time is just an inner-sense, then according to Kant is my mind presented the entire "content" of my life at once... and then my mind organizes it into the time-ordered events?
Here's a link to the Critique of Pure Reason: https://www.gutenberg.org/cache/epub/4280/pg4280-images.html#chap18
Relevant section is: "SECTION II. Of Time.§ 5. Metaphysical Exposition of this Conception."