Ha, I did exactly the same thing, and I took it a step further. I called BCBS talked to their overseas nurse supervisor, and mentally rehearsed with her the mechanics of using this insurance in EU, even looked at the claim forms.
The trick apparently is to be admitted to hospital for 24hrs (or 48 I forget the details) in which case BCBS has to contact the hospital directly and start paying them. The most likely event would be some emergency like food poising, in which case you don’t have time to hunt down “in-network” providers and ask then to fill forms, etc. My best guess, BCBS will most likely deny most such claims on some technicality. It’s an ugly scam compared to healthcare in EU or Canada.