I don’t think you can have multiple wheres, but you can combine them into one.
Sorting by last modified goes like this: file.mtime desc (desc is for descending).
To combine both suggestions, this will probably work:
where Type = "meeting" and Tags = "ConnectHumanitySurvey"
sort file.mtime desc
If you want to have more than one tag, you’re gonna have to do things a bit differently. A field like that would be seen as a string, not a list. Instead, you define a list like this in the YAML of your notes:
- Tag one
- Tag two
Tags: ["Tag one", "Tag two"]
And then the query would look like this:
where Type = "meeting" and contains(Tags, "ConnectHumanitySurvey")