This is technique from Marcelo Garcia, on side control escape:
https://www.youtube.com/watch?v=eiFQI_6AMIQ
And this one is from Renzo Gracie:
https://www.youtube.com/watch?v=0eKZ3X9Mz-4
I want to borrow the concepts from both, in order to try it out in specific sparring.
Placing it here, in order to publicly shame myself, in order to work on them and update this blog post with my learnings.
The entries for both seem related, but the escapes are different.