When you connect each switch independently to the router, there will be a broadcast domain for each switch, thus controlling the broadcast traffic passing through your network.
Transmission fluid is a slippery liquid that acts as a lubricant for all of the moving parts inside your transmission. In an automatic transmission, this fluid also serves as a coolant and a viscous fluid that transmits power from the engine to the transmission. A variety of fluids are used for different transmissions.
Flushing fluid in that condition and replacing it with new, clean fluid may cause your transmission to fail at any moment possibly leaving you stranded on the side of the road.At this point, the transmission is in pressing need of repair. There is no way of telling when the transmission will fail.