First of all, if the other party thinks that you are authorized by another real estate owner or you hide the fact that there are two names on the real estate license from them, it is very unfavorable for you.
Secondly, the intermediary contract has been concluded and the intermediary has begun to find a house for you. The judge told me privately that I would sell it if I didn't sell it, which means that if you don't sell it, you will breach the contract and be liable for breach of contract.
Do they know each other? If so, how can I protect my interests?
If you have evidence that they know each other, you can apply to the judge for withdrawal.