meet
遘 centers on the act of meeting or encountering, often with a sense of chance or formality.
遘 combines the movement radical 辶 with 冓, which likely contributes the sound. The character expresses the idea of moving toward a meeting or encounter.
The movement radical 辶 suggests going, and the inner part 冓 looks like a structured meeting place. Picture walking along a path to a formal encounter.
For コウ, imagine a formal meeting where everyone bows and says 'ko-u' (like a respectful cough) as they greet each other: ko-u -> コウ.