If so, how?

while it's loading there's a link to "alert me when ready" or some such wording. click the link, it'll run asynchronously and be available in the report results area when done. Other solution: schedule the report, does basically the same thing on the back end.

Our accountants use this report in the monthly ending to make the conciliations

okay...I was just answering your question on how to run asynchronously.