"the tty2 terminal doesn't give a prompt back" – The prompt in the other terminal comes from a shell there. The shell and the terminal are two different things. To redraw the prompt you need help from the shell, but your redirection involves the terminal, not the shell. What is the shell? Please make sure there is no XY problem here. [Edit] the question if there is. Why do you want to print to another terminal that is in interactive use?
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