DirectQuery Impala Connector for Power BI Report Server

According to the documentation, Scheduled Refresh and DirectQuery are not supported for the Impala connector in Power BI Report Server? https://docs.microsoft.com/en-us/power-bi/report-server/data-sources

However, in the Power BI Desktop for Report Server, DirectQuery is one of the options for connection.

Can anyone clarify if DirectQuery is really supported or not for the Impala Connector in Power BI Report Server?

Thanks!