Hi Tiki,
Here's what I think.
First, clarification. As far as I know you shouldn't be disqualified for not attempting a section in Delf/Dalf. Yes you'll get a zero if you get anything less than 5/25 in a section but if in the end your score is above 50 you should get your diploma whether you got a zero in a section or not. If you don't score above 50, then you should still get a transcript with the scores for each of the sections(you attempted) and this include should have your listening/speaking scores which you can send to BIQ. You should ask your alliance francaise to give you a transcript, which they really should be obligated to do. Otherwise they should explain to you why they can't give it to you. This is clearly stated in the Delf/Delf instruction manual which you can find online.
As to whether, BIQ will accept your listening/speaking scores. My thinking is that this will only be so if you have obtained the Delf diploma ie if your score was above 50/100. The rules say you have to have 16/25 for speaking and listening for the Delf diploma meaning the level you've passed sat for and obtained over 50 overall. The difference with Tefaq is that the latter is not a diploma but an exam adapted for immigration purposes. They therefore chose to adapt TEF and not Delf/Dalf, otherwise they would have made it DELF/DALF(AQ).That's my interpretation and I could be wrong.