Quote Originally Posted by Kesey View Post
Yes and no. The game does tell you, around the time you meet your starter city scion and they solve the mystery you have the echo, that you can see telegraphs because of the echo.
I don't recall that ever being said - as far as I'm aware, the "telegraphs = Echo" thing has been a long-term fan theory but never stated within the story.

If battle-instance dialogue can be taken as canon, then it seems to be disproven by "When It Rains" (at the start of NG+ Shadowbringers Part 2 if you want to replay it). At one point Alphinaud calls out that he can sense a surge of aether coming, and then gets a stack marker on him, which would suggest that sensing incoming attacks isn't purely the realm of Echo-users. Detecting magical attacks might need some degree of aetherial sensitivity, and physical attacks might be just a matter of watching your opponent and guessing their attacks (but of course you can't see every single hit coming).