Kyon was enthusiastically doing experiments, ignoring the sound transmitter bursting with constant calls from Franz and Marina. The girl must deal with her issues herself, and the servant would have to keep his gratitude for later. If the theory was right, bright emotions didn't go anywhere. They remained in the soul where they multiplied with time, so it was only reasonable to collect them all at once, not in little portions.
The channels and the keys between the worlds: https://ibb.co/kDnNgXd