The same response type in two requests in MassTransit Saga

I'm trying to create a state machine and I'd like to send multiple requests from this state machine. The requests are defined as follows:

public Request<StageState, ICloseStage, ICloseStageRequestSuccess, IRequestFailed> CloseStageRequest { get; private set; }

public Request<StageState, IPublishStage, IPublishStageRequestSuccess, IRequestFailed> PublishStageRequest { get; private set; }

Both requests might get the same response in Response2. However, when I'm running the state machine I'm getting the following error:

System.ArgumentException : An item with the same key has already been added. Key: IRequestFailed

So, I suppose this is happening because I'm using IRequestFailed in both requests. Is it a by-design behavior or is there a workaround so I can use this response type in both requests? I really need to use it in this way because IRequestFailed is processed in a unified way for all the requests in the state machine, and I'm planning to add more requests.

Thanks in advance.

The MassTransit state machine does not support two requests with the same response type.