you mean the first echo approved and questions about the second or....??

uh, well, bertholdt saw how alan was embedded in the titan body, all the muscles and stuff attached to him and how he has to pull himself out of it. he's definitely triggered by this, as he has to do the same thing in canon and the way it looks would be super familiar to him. the titan form alan summoned also had no skin on it, like the colossal titan

unless you meant the first echo uhm...

well, i was just thinking that the monster looks pretty similar to an atma form, something that gale devours in canon to keep from going crazy with hunger lust, so it would trigger an atma echo rather than a human one.