I thought a TN about "Text continued on page 89" would be helpful since the break between page 88 and 89 is in the middle of a sentence. Should it definately come out?
I follow your logic that a new braille page with no print page number shows the braille reader that the caption is on an unnumbered page. But I'm not sure if that covers the question I had in the third paragraph. How does the braille reader know that there is a page turn when the both the print and braille unnumbered page end on line 25?