You have read the Analysis for Office client tool guide about BOESessionRefreshTime parameter.
In case BOESessionRefreshTime=-1, this means that the time taken is the session time out retrieved from the BI platform minus one minute: Analysis will send the dummy Http request to the BI platform before the timeout value so that Analysis remains active.
You have question about what the the session time out retrieved from the BI platform.
Analysis for Office 2.X
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