*I think* that if you have no sorts in the union query, then the results of the 2nd query will just be appended to the first query, i.e. it will be added to the bottom of the report.
but a better option if you're not using the query as a direct display, would be to create a virtual field in your first query, and name it total, and just give it "" as a value, then in your 2nd query, you can put the total in there.
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