Referee Steven McLean was not involved in the decision to rule out Celtic's late leveller against Hibernian.
The Scottish FA official initially awarded the goal after Daizen Maeda struck from an Alistair Johnston cross at Easter Road.
However, the goal was then disallowed with VAR official Alan Muir ruling that the ball was out of play before the cross came in.
Footage of the incident has cast doubt over whether the whole of the ball had crossed the line or whether it was still in play.
Due to the ball being in or out of play being a "factual" decision, McLean was not involved or called to the monitor for a pitchside review.
Instead, those decisions are down to the VAR officials to rule on. There is, though, scope for the referee to be sent to the monitor but only if it would "help manage the players/match or 'sell' the decision".
IFAB rules on VAR reviews, state: "For factual decisions e.g. position of an offence or player (offside), point of contact (handball/foul), location (inside or outside the penalty area), ball out of play etc. a ‘VAR-only review’ is usually appropriate but an ‘on-field review’ (OFR) can be used for a factual decision if it will help manage the players/match or ‘sell’ the decision (e.g. a crucial match-deciding decision late in the game)".
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VAR guidelines then state that reviews should be conducted in an efficient manner but that the decision is more important than the time it takes, especially for complex incidents.
IFAB rules read: "The review process should be completed as efficiently as possible, but the accuracy of the final decision is more important than speed. For this reason, and because some situations are complex with several reviewable decisions/incidents, there is no maximum time limit for the review process".
Brendan Rodgers said of the incident: ""My take is that the (VAR) official Alan Muir has had a guess at it.
"The linesman arguably has the best view in the stadium and he doesn't give it (as out of play).
"So for that to get overturned, then I'm assuming there's an absolutely clear image of the ball being out of play.
"So that's a huge disappointment."
