How to make a copy of a telegram channel?

Question

Telegram

There is a certain channel and everything that is on it must be transferred to the backup channel that I have already created. Messages will be singled out one by one too much, there is a lot of information on the original channel, it is necessary that everything be transferred at once, or at least slowly but automatically. How can this be implemented?

Answer 1

It also became interesting, are there any ways to reload all messages from one open group to another group?