Alternately, the VAR can inform the referee that a decision or incident need to be reviewed. "I don't like it", said the German.
According to The Times video official Neil Swarbrick reviewed 11 live incidents on his monitor from a studio in west London but "none produced verdicts different to those of Marriner or at least none were deemed to show up any discrepancies worthy of official review".
A little nod from Marriner told his assistants all was fair with the goal and it stood.
The system, which has undergone 18 months' worth of trials and training, could become a permanent fixture in the English game should football's law-making body, the International Football Association Board (IFAB), approve its regular use at a scheduled meeting in Zurich in March.
Presenter Lynsey Hipgrave was speaking to Graham Poll as we were given access to what the VAR referees actually looked at.
Brighton have been in good form this season in the league.
This rivalry developed while I was working out of the country, not in my earlier years as a Crystal Palace supporter. The Baggies will be underdogs but will take heart from the fact that they came away from Merseyside with a goalless draw on their last trip to Anfield. And it does not look good. Among them were concerns about long interruptions to play.
But without the added influence of Zaha, Palace were unable to battle to a victor and fans will be hoping Zaha's absence was only a rest and not a sign of a transfer.
However, Palace managed to level matters against the run of play in the 69th minute when Bakary Sako rifled home a superb effort from 25-yards out. But the striker's determination was not enough to steer his side through to the next round.
That draw was Brighton's third game in a row without a win, and since then Chris Hughton's men have won just one of their next eight league games, slipping to 12th in the table and just three points above the relegation zone.
Hodgson has recently faced the loss of numerous first-team players to injury, and it will have discouraged him further when he was forced to substitute Jeffrey Schlupp in the 13th minute after he was hurt in a challenge with Izzy Brown.
With regard to critics who believe that too much technology will lead to too many stoppages during games, Riley added that the VAR will focus only on "clear and obvious" errors, noting that the aim is for "minimum interference, maximum benefit".
- Suspend US-S Korea military drills
- Heat climate and heavy rain might trigger flooding
- My relation with Kim Jong-un is very good
- Trump Sides With Iranian Protesters: 'The US Is Watching!'
- Trump Rips Feinstein Over Fusion GPS Transcript Release
- With Hugh Grant, 'Paddington 2' is simply wonderful
- United States dollar continues to decline against euro
- GM wants to deploy fully autonomous, manual control-free vehicles by 2019
- Merkel wants to seal coalition deal with SPD swiftly
- 'Play our best:' Brady brushes off controversy, focuses on Titans