Cross Account Data ( AWS S3 ) Access using Sisense Athena Connector

Hi, 

I have a use case where I need to access that AWS S3 data ( Account B)  using Athena connector whereas Sisense is running in EKS pods in Account A.  Could you please help me on how to tell the Athena connector to look for Account B for data? 

I tried to set cross-account access in AWS through IAM user and Role ( Assume role). Those accesses worked fine when I tried to access data without involving Sinsese ( AWS CLI)  but with Sisense Athena connector it did not work and error out with permission issue.