Nate's Food Company (NHMD)

[shotsky]

While what you say may be true, you can't see any of that action. L2 only shows tranches, not whole orders.
And since every transaction is handled by MM's, your sell is an MMs buy, REGARDLESS of whether there is another buyer for it. And, MM's break up their buys and sells based on the quantity that the spread is good for. So, while you are selling an order of X amount, that may result in multiple tranches by MM's, and possibly more than one MM is involved in handling your order. It is the fastest computers that make the most money for MM's.
So counting individual buys and sells (tranches) tells you exactly nothing.
I don't know of any place to see full order processing.
If you click on 'Transactions' at your brokerage to see your order processing, it should list the buys/sells against a given order.
A recent sell I did has numerous transaction sell entries for my order , but it is all from the same order number. It took several days to complete.