Copilot for Microsoft 365 AMA: Engage with Experts Live on January 17th

I have repeatedly tried to create a PPT presentation based on information in an Excel document, have referenced the specific document, XLS tab and column to pull from. Each time I get a message back from CoPilot that it could not create the PPT. I have submitted feedback. Is this something that CoPilot should be able to do? If so, can I also ask it to use a corporate PPTX file as a style guide so that the PPT file uses the approved corporate slide deck theme?