Hi Luke. If there are multiple simultaneous requests, the widget queues them and executes one at a time in the order they were received. If you think that's not the behavior you see, feel free to post a link to a .story file, we'll take a look. You don't need to use the same Storyline trigger to both send and receive. In fact, it's hard to imagine a scenario why you would need to receive the same data you just sent since you already have it.