Sure. Perhaps I didn't explain very clearly in the first place. :) For any given exchange, its API doesn't guarantee whether the private information comes before or after the public information. It can vary from one trade to another. For a given trade, if the private comes before the public, we have information edge and can use it. If the private comes after the public, we lost information edge, and we can mitigate the loss (of information edge). Let me know if you have more questions, or you can directly message me on Discord https://discord.gg/b5EKcp9s8T. Thank you.