If the minRoundTripTime is less than the remaining timeoutMS, the value of this field MUST be remaining timeoutMS - minRoundTripTime. If not, drivers MUST return a timeout error without attempting to send the message to the server. This is done to ensure that an operation is not routed to the server if it will likely fail with a socket timeout as that could cause connection churn. The maxTimeMS field MUST be appended after all blocking work is complete.