cannot receive group messages sent Bcc
Since you've mentioned BCC (blind carbon copy), I assume you're referring to email messages. If someone composes an email message and send the message BCC to 10 recipients, for example, and you are one of the ten, you all will get the message without knowing who else it was sent to. If anyone replies, the message will be sent to the originator. If replies were sent to everyone, individual identities could be revealed. At least that's how I see it. I don't send group messages BCC with the expectation of a group response.