让步状语从句：While eye contact may be a sign of connection or trust in friendly situations;其中主干为eye contact may be a sign，of connection or trust in friendly situations为介词短语作后置定语修饰sign，or并列connection 与 trust

主句主语：it

谓语： is more likely

宾语： to be associated with dominance or intimidation in adversarial situations.

参考译文：

虽然眼神交流在友好场合可能是一种联系或信任的迹象，但在敌对场合更可能与支配或恐吓有关。