Myanmar script preceeded Devanagari

[U Kyaw Tun]

Sanskrit speech in Devanagari script and
Pali speech in Myanmar script (as used in the country of Myanmar)

Skt-Dev does not seem to have a dedicated ब {ba.}-grapheme, and has borrowed {wa.} and had added a diagonal line inside to show {ba.}:
व + diagonal --> ब
We find such a case with ङ {nga.}-grapheme also:
ड + dot --> ङ
Based on these two facts, I am suggesting that Pal-Myan preceded Skt-Dev. Proceeding further, I claim that Myanmar script is the direct descendant of the Asoka script aka Brahmi. I welcome input from my peers. -- UKT120119

[tantular]

Yes, Myanmar script is a descendant of Brahmi, but so is Devanāgari, and every other script in India, Tibet, and Southeast Asia.

Myanmar and the other scripts of Southeast Asia all descend from Pallava script. Myanmar script evolved from the Pallava script of South India at roughly the same time as Old Nāgari evolved from the post-Gupta script of North India.