Hi Loic, yes it is possible. Are you facing any issues because in the Repeat Grid, you can directly refer a Data Page. Now its up to you how and when you want to load that data page to use in the repeat grid. For example if number of records are high may be you want to defer load and then show on the UI for seamless user experience.
From the configuration point of view, you only need to refer the data page name and the properties will be available to configure as the column sources. Let me know if you face any issues. Thanks