Not neccessarily. Depends on implementation. If i understood it correctly that is.
I would think of a telegram conversation as the thing, which adds an string item/channel like e.g. ‘last message received’ (incl. addtional metadata, sender etc.) and perhaps another string item/channel like e.g. ‘new message to send’ (with additional metadata as well). With that you can easily write a rule which answers any command.
Did I say, I am interested in anything to receive telegram messages as well?