Associates. Is that the word.

Isaac trembles slightly but holds himself still. He doesn't need to fall to pieces now, he wants to show him how good he can be. So there's some sense of needing to arrest that nervous energy, hold it in check while Delta shifts in against him. It feels--

"Thank you."

It seems to be the right answer, and he does. He turns his attention back to his work and flies through it, aware of Delta's eyes on him all the while.