Corbyn is not in a position to deal with Sturgeon, therefore the situation is hypothetical. We have put forward the claim that, in such a situation, he would make significant monetary concessions to the SNP in order to gain their support.
There is no "burden of proof" because, once again, it's a hypothetical situation.
This is the only contribution you have made in the past week that has any merit.
By the way, you seem to be struggling with the way the board software works. If you want to reply directly to me, use the Reply button next to my post. The Reply button at the end of the thread is just a general reply to the thread.