This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
迒 combines the movement radical 辶 with 亢, but the exact historical development and original meaning are uncertain.
The movement radical 辶 suggests walking, and 亢 might be a phonetic or a person. Picture following a trail of footprints left by someone walking ahead.
For コウ, imagine a trail of footprints leading to a coat: coat -> コウ, and you follow the footprints to find it.