Sure, I was not aware of that and didn't see this in our old v13 setup. The following is the documentation I see on the `rs_run_recipe` command and adding here for reference:
```
--thread,             Schedule the operation on a specific thread name
  -t THREAD             for concurrent execution. Thread names must begin
                        with a letter and can consist only of lower-case
                        alphabetic characters, digits, and the underscore
                        character.
```