Bitwarden has a separate 2fa app so your totp codes aren't in the same password vault (though you can do that, but shouldn't).
I use a Yubikey as the 2FA for my bitwatden, then store all the TOTP codes with the passwords in the same vault. Quite convenient, and also adheres to the principles of MFA
If you were to use two apps / two stores, there is another hurdle.