My original prompt yielded the correct number of meetings for the week 23. I then asked copilot to exclude lunch from the totals. The second response had the same number of meetings in each category:23 but the percentage was based on a total number of meetings of 32. Lunch wasn't excluded and 9 phantom meetings were added.
Selecting the suggested prompt tell me more about project specific meetings returned info on 5 meetings though both previous results list 6 meetings as project specific and one of the returned meetings was actually an external meeting. The summary lists 3 external engagements but asking for more info on them returned an error both times I tried to get more info. Asking for more info on operational meetings returned the same apology and generic explanation of the meeting category.
I think there is potential for benefit if copilot can provide accurate info. I tested the suggested prompts for about an hour. None of the results were helpful either because the response was an apology with generic info or it wasn't accurate.