You certainly can; however, you won't be allowed to share the channel on XDA. I've closed your thread.
As an exemption from the last bullet of rule no. 5 of the XDA Forum Rules, we grant only developers the privilege to share references to their social media in their own development threads. These conditions obviously don't apply to this thread or you. Additional information is also available here:
WhatsApp/Telegram Groups and Channels - Going Forward Hello XDA family! Just notifying all members that posting certain links to Telegram and other sites like WhatsApp is now allowed on XDA. What does that mean? We will allow links to messages...
If you occasionally intend to share Telegram references in future, please refrain from it as well as from such requests.
Thanks for your cooperation!