Cristiano Ronaldo celebrated his 1,000th professional match by scoring for a record-equalling eleventh consecutive Serie A appearance to set leaders Juventus on the way to a 2-1 win at SPAL in a top-versus-bottom match on Saturday.
Andrea Petagna pulled one back from a penalty in the 69th minute amid problems with the VAR system. Neither the referee's ear piece nor the pitchside monitor appeared to be working, forcing him to use a walkie-talkie to talk to the video officials.
The win ensured that Juventus, chasing a ninth successive title, stayed top for another week as they went four points clear of Lazio who visit Genoa on Sunday. SPAL's fifth consecutive defeat left them bottom with 15 points.
Ronaldo's goal, which took his league tally for the season to 21, meant that he joined Fabio Quagliarella and Gabriel Batistuta as the only players to have scored in 11 consecutive league appearances. Quagliarella did so for Sampdoria last season and Batistuta for Fiorentina in 94-95.
He also reached yet another milestone with his 1,000th match for club and country in a remarkable career which has seen him play for Sporting, Manchester United, Real Madrid and Portugal.
However, his unhappy record of never having scored from a free kick for Juventus remained after he saw a late effort bounce off the crossbar.
"I feel the team is definitely improving, but we just don't seem to kill matches off," said Juventus coach Maurizio Sarri. "We are creating chances consistently and we have hit the woodwork seven times in our last three games.
"Sometimes, we defend actively, putting good pressure on our opponents, but then we become passive and we just wait on the edge of our penalty. It's something we have been working on since the start of the season."
Ronaldo had an early goal disallowed for offside and Dybala struck the inside of the post before Juventus went ahead. Ramsey sent Cuadrado down the right, he fired over a low cross which was swept in by Ronaldo.
Ramsey dinked the ball over goalkeeper Etrit Berisha for the second after he was released by a typical piece of Dybala skill.
The referee, who initially waved played on, eventually changed his mind but the communication problems meant it took nearly four minutes to reach the verdict.
After the match, Sarri complained about VAR confusion.
"Today, we conceded a penalty on the basis of VAR even though VAR wasn't working. It seems a big injustice to me," said Sarri.
"If the monitor doesn't work, the [pitch] referee should decide. If it had happened the other way around, the world would have collapsed.
"I am the first coach to suffer a penalty on the basis of a VAR decision without the referee looking at it," he added. "I understand that the rules allow it and La Penna explained it to me but I do not agree with it."