                 { return nil }
             }
 
-        overallProgress.holdConstant
+        overallProgress = overallProgress.heldConstant
             {
             uploadProgress.actualTotal   = optionalTotal(metrics.requestBytesTotal)
             downloadProgress.actualTotal = optionalTotal(metrics.responseBytesTotal)


        if requestStarted || responseStarted
            {
            overallProgress.holdConstant
                { connectLatency.complete() }
            }
        else


        if responseStarted
            {
            overallProgress = overallProgress.heldConstant
                { responseLatency.complete() }
            }
        else if requestSent
