In hopes of claiming BCC I sent BTC (Mycellium wallet) to a recently generated BCC wallet (Bitcoin.com). The transaction was confirmed, however, I don't see the BCC in my BCC wallet (or BTC in my BTC wallet!). How can I retrieve my BTC and BCC?
Because BTC and BCC have the same address type, it this is an easy mistake to make. Try finding the mnemonic or seed used to restore your BCC wallet from bitcoin.com, and instead use it to generate the BTC version of your wallet. Not all wallets provide support for BTC and BCC; some online exchanges don't give users their mnemonic recovery and worse still, a lot of wallets implement BIP 39 mnemonic differently.
This is one of the problems with forks, having multiple chains causes confusion, and people lose their money.