This happens entirely from the Sheets add-on — open the sidebar, go to Settings, and find Export report. Describe the report you want in one sentence, like "quarterly summary with a regional breakdown", and click Generate PowerPoint.
TalkingSheet builds a full multi-slide deck grounded in your sheet's data and downloads it straight to your computer — charts in it are real, editable PowerPoint charts, not pasted-in images. This is a Pro and Team feature.