Pure speculation: What if they in fact have no need for a BLA, as they may have already signed a buyout deal subject to an approved MAA? (I am not sure I believe this myself!)
NWBO has pumped production expansion for commercialization since 2013. And they pumped 100s of millions of dollars into Cognate to do so, well before they bought Flaskworks for $1.5 mill and stock in 2020. There was never a production capacity issue stopping them from submitting a BLA. Plenty of CDMOs that could handle it. Even ones LP didn’t sell.
And they still haven’t proven Flaskworks can produce an identical product.