complicated, confused, dispute
轇 centers on tangled complexity: something complicated, confused, or disputed. The idea is of things being intertwined or knotted up, leading to confusion and argument.
轇 combines 車 (vehicle) with 翏, which likely contributes the sound and may suggest entanglement. The exact historical development is uncertain.
A vehicle (車) tangled up with feathers and lines (翏) creates a complicated, confused mess that leads to disputes.
For コウ, imagine a complicated knot that you need to cut: "cut" sounds like コウ, and the tangled knot represents the kanji's meaning.