Filter array where a property value doesn't exist in another array

Question

Using Power Automate, I want to filter an array where the values in the OrderNumber property don't exist as an OrderNumber in another array.

It seems like it should be a simple task, but I'm not sure how to handle it. I have unsuccessfully experimented with putting it through an Apply to each action, but the original array has 20,000+ items, so that might not work very well/quickly anyway.

Original Array to be filtered:

[
  {
    "OrderNumber": "1234567",
    "CustomerName"" "Customer A"
  }
]

Array to check against:

[
  {
    "OrderNumber": "1234567",
    "CustomerName"" "Customer A"
  }
]