Setup one bank account for multiple LLCs or one per LLC

[Jose C.]

Let say I have 3 LLCs(one rental per LLC) and I have another company that manages the LLCs. I was wondering if there is a way that the company that manages the LLC is the one with the bank account and not the LLC that owns the house? Is this legal? I say a video saying that is possible but did not explain how? In other words, if they are supposed to be different companies, under what kind of agreement a company will give all its money to another company without getting anything in return? In case of litigations, could this cause trouble with this kind of arrangement?