SYA aren't the producer though. The JV is (SYQ).So PLL are...

SYA aren't the producer though. The JV is (SYQ).

So PLL are guaranteed product via their offtake with SYQ, so they have signed off that product with LG. They are also guaranteed 100% of that sale.

SYA can't negotiate an offtake yet as they don't have any product to negotiate with. Only the JV can (SYQ). I think there would be ongoing negotiations at the moment for an offtake with the balance of the product, via SYQ (could possibly be with LG also).
I don't put it past PLL to do a deal on the side, outside of the JV as its in their best interests, but there is every chance that SYQ could be dealing with the same people.

As far as I am aware, until Moblan or something else gets going, SYA can only negotiate on behalf of the JV (of which they own 75% so still in their favour to do so), as that's the only product they are going to be dealing with for now.