It is a good look into the expected timeline, not writing this deadline off, but keep in mind it is often very possible to adjust PoP in these types of contracts. A simple matter of Advent requesting a pop extension and getting a couple of signatures from Northwest. I very much doubt that Sept 30 is really a 'hard deadline'.
Certainly matches the RTOR timeline I believe we are in.
“Assuming we were at week 10 when Dr. Ashkan spoke on 6/23 and that a pre-NDA/BLA meeting happened that week as all the players were present, we would now be at week 12 RTOR process. Potentially NWBO could announce submission at week 16, about 8/4. Then approval anytime after 9/1.”