Not accepted by UTC but in ISO ballot?

[Shriramana Sharma via Unicode]

I was looking at the pipeline for something else, and for the first
time I see a character category: “not accepted by the UTC but in ISO
ballot” and two characters in it.

So IIUC while technically people are free to submit a document to the
ISO separately without submitting to UTC, it has always been the
practice to my knowledge to get a character approved by the UTC first.

Anyone throw some light on these particular cases?

-- 
Shriramana Sharma ஶ்ரீரமணஶர்மா श्रीरमणशर्मा ������������������������