LIVERPOOL'S clash with Norwich was delayed for 10 minutes after the video referee system FAILED.
An agreement is believed to have been made in which officials will telephone through to the VAR base in Stockley Park, near Heathrow Airport, if needed.
Players and managers returned to the touchline for the second-half with Liverpool leading 4-0 at Anfield.
But the game had a lengthy break as one of the official's headsets was not working.
One of the officials even put the headset in the ear of Liverpool midfielder Jordan Henderson to show it had failed.
The video assistant referee system was making its debut in the Premier League.
It has been commonplace elsewhere in football but at Anfield it was being used for the first time in a league game.
As with other competitions, VAR was only used for "clear and obvious errors" and "serious missed incidents".
And these can only take place in four types of match-changing situations, which are goals, penalties, straight red cards and mistaken identity.
It's first use at Anfield actually came in the eighth minute when Divock Origi's cross was accidentally turned in by Norwich defender Grant Hanley.
All goals are checked by the VAR team which is based in Stockley Park, near Heathrow Airport.
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