CBT is not a place. I mentioned CBP (Customs and Border Protection) as the main immigration authority in the US. I realize this is not the US, Europe, or even Australia, hence we get to live here without doing any of the residency paperwork. What would a french immigration agent do if someone tried leave the Eurozone for a few hours and come back trying to pull the permatourist card. How many times do can you do Colonia runs until someone even asks a question? My point is, very little is asked from us, it just makes little sense, especially for first timers.
On top of that you don't need to apologize to me.