AWS managed policy: AmazonChimeVoiceConnectorServiceLinkedRolePolicy
The AmazonChimeVoiceConnectorServiceLinkedRolePolicy enables Amazon Chime SDK Voice Connectors to
                stream media to Amazon Kinesis Video Streams, provide streaming notifications, and synthesize
                speech using Amazon Polly. This policy grants the Amazon Chime SDK Voice Connector service permissions to
                access customer’s Amazon Kinesis Video Streams, send notification events to the Amazon Simple Notification Service (SNS) and
                Amazon Simple Queue Service (SQS), and use Amazon Polly to synthesize speech when using the Amazon Chime SDK
                Voice Applications Speak and SpeakAndGetDigits actions.
For more information, see Using the Amazon Chime SDK Voice Connector service linked role policy.