OK. Trying to understand here. For example, is it possible to use BEP2 to send 0.01 btc to my Coinbase wallet?
No. Coinbase doesn't support BSC. You can't send BEP-2/BEP-20 tokens to a Bitcoin address; it's pretty much like sending ETH to your BTC address— it's either that the wallet won't allow the sending, or you end up losing your money.
Bitcoin on the Binance Smart Chain are just "wrapped" bitcoin. Pretty much bitcoin IOUs.