Some of them throw chicken bones in a pot of blood for guidance on who gets what so there's that.
Something in your file might not meet the criteria for you to be able to drop SISIP and get brought on board by VAC, or at least not yet. Call your SISIP dude and have them engage with the VAC CM. Try and correspond over email if possible so there's a record of conversation you can reference. Some of these people have been working in the business 20 years. Some started this year and are learning as they go, not uncommon for people to give wrong info.