Against Wolves, the old guard did the job for Slot with Salah, Robertson and Jones sending Liverpool to victory.
The criticism and spotlight on Salah this season only intensified when he accused the club of "throwing me under the bus" in an explosive interview in December.
He left soon after for the Africa Cup of Nations, Egypt losing to Senegal in the semi-final in January, and the forward now has four goals in 11 games since his return.
Yet the 33-year-old has been nowhere near the levels he set last season, when he scored 34 goals in all competitions as Liverpool won their second Premier League title.
It was a lacklustre first half at Molineux from the forward before he added Liverpool's second - although such was the quality of Robertson's cross he could not miss.
There does appear to have been a truce between Salah and the club, although every goal could be his last for them after a decorated Anfield career.
It was also a rare Robertson strike, in a rare start this season, with the 31-year-old close to leaving for Tottenham in January.
But the Scotland international showed his reliability - along with Jones, who continues to do the same.
Both the midfielder's goals this season have come in the last two rounds of the FA Cup, having scored in the fourth-round win over Brighton as well.
At 25 Jones is far from old, but he has 215 appearances for Liverpool and the academy graduate has been dependable and valuable for both Klopp and Slot amid big money buys.
It means youngster Rio Ngumoha has the perfect place and perfect players to learn from after the 17-year-old made the fourth start of his young career.
"It's special when you are 17 years old if you are able to impact it with some very good one-v-one situations," said Slot. "That also makes him special, there are not many players in the modern game who do that.
"He also did better than three days ago because he kept the ball more. Three days ago he also had impact and today he was even better.
"It was a nice moment to use all his energy for the attacking part."