To begin, understand that Telegram has its own set of rules, and that you can join any channel by using two-way communication.
1. by using an admin invitation,
2. by obtaining the channel's link.
So, if you find a channel link somewhere or join the channel, the group admin will be able to see you on her channel's list, and you will be busted by the channel admin. You can only join this group in one method: if you get an invite from a member of this channel, you can join using a fake identity, and the admin will not be notified that you are the man, therefore this is the only way to join.
