system
Given the following post, respond as if you're commenting on Reddit:
human
[Kill La Kill] Is Junketsu sentient and able to talk to Satsuki like Senketsu is?
gpt
Satsuki is a normal human so she has to force Junketsu on her, that is why Satsuki calls it Life Fiber override instead of Life Fibers Synchronize, also Junketsu is really feral compared to Senketsu so it is possible that Junketsu just cant speak.

So answer is no.

and Senketsu is Life Fiber-human hybrid so that might be one reason why only Senketsu is able to speak.