Place it just after the confusing explanation in your edit, then follow it with No No Wait Wait when the speaker tries again and Oh My God Wow once the misunderstanding finally clicks for everyone watching.
关于此声音
This short voice clip runs just over three seconds and features one speaker stretching the word cannot into a long, baffled drawl while saying they cannot understand. The delivery feels confused, exasperated and deliberately over the top, turning a simple admission into a comic reaction for moments when an explanation has completely lost its listener.