Use the updated options in the Run another Parabola Flow to run Flows in sequence. The new options are:
If Flow 1 tells Flow 2 to run, these options will allow Flow 1 to finish running before Flow 2 has finished. In the existing options, Run once and wait, and Run once per row and wait, the step will wait for Flow 2 to finish before it can finish.
Using the Run once per row with a file URL option will add runs to the file queue of Flow 2.