to become complicated
問題が複雑に入り組んだ末に解決した。
The problem was resolved after becoming deeply entangled.
双方の利害関係が入り組んでいる。
The interests of both parties are intertwined.
複数の主張が入り組む状況では仲裁が必要だ。
In a situation where multiple claims are entangled, mediation is necessary.