EventBridge rule silent on conversation events

Got an EventBridge rule set up to catch genesyscloud:conversation:created but nothing’s landing in the target queue. The pattern looks right to me.

{
 "detail-type": ["Conversation Created"],
 "source": ["genesys.cloud"]
}

Checked the CloudWatch logs for the rule itself and it shows zero matches. The events are definitely firing in Genesys. Missing something obvious in the pattern syntax?