Tell me if this already works with the current telegrams components, but I tried with no success in HA.
The problem with HA telegram components, it only works with bots and bots can not talk to others bots. I have the IFTTT bot to send me a message to my personal account.
I wrote a telegram listener in python which listens to message from the IFTTT telegram bot. When I receive a message, I run a service on HA. All works well, but an all in1 HA component would be cool.
I can not use a bot in my script. Bot to bot communication is not allowed. Ifttt only uses bots.
From telegram FAQ:
Why doesn’t my bot see messages from other bots?
Bots talking to each other could potentially get stuck in unwelcome loops. To avoid this, we decided that bots will not be able to see messages from other bots regardless of mode.