Does this mean you exchange
1. Bitcoin for Monero, and then immediately
2. Monero for Bitcoin
meaning you have the same amount of bitcoin (minus fees) as before the swap, only more private?
Discussion
If you wanted to break links correctly you would do #1 and wait some time (just say a day or so, the longer the better though) then do #2 but break up the amount and stagger the timing you send them
Going in and out quickly and in a single amount would be relatively trivial to see on chain