Just had mine done
He was here for about 35/45 minutes.
Checked signal first
Had to sign some bit of paper, nothing major just about him using the PC to check the speed and do the router
Installed Modem
Phoned once to get the hit
Did a direct modem test
Connected the router
Did another speed test
Overall very happy.
Also he re-did the brown box outside as it was falling off the wall