And nine of those minutes was remembering how to flash firmware ...
Your old router may have been abandoned by the manufacturer, but OpenWrt can breathe some new life into it and make it useful again.
So in this flat I have a fiber connection, with a PON. I plugged in my own Archer C6, flashed OpenWRT on it, and flubbed with configuration until I got it to work (I wasn't very familiar with OpenWRT, ...