The glaring focus that has been trained on one world-class Liverpool icon shifted to another on Anfield's most recent disappointing night.
The Egyptian forward has faced examination for his subpar performances this season - and was consigned to the sidelines for the second successive Premier League game as the Black Cats came to town on Wednesday.
But it was leader Virgil van Dijk, a peerless defensive foundation as Liverpool have secured the complete set of major trophies, whose poor form came under the microscope during the draw.
Van Dijk, 34, and Salah, 33, both agreed to high-value two-year deals in the summer, with barely a Liverpool question asked at the idea of handing contracts to a veteran duo much nearer to the end of their careers than the start.
In fact, it was a reason for joy - but now there is no escaping the stark fact that performance has dipped alarmingly for both.
Liverpool have been susceptible in defence ever since head coach Arne Slot and the club's scouting department embarked on a £450m summer rebuild that has yet to prove anything like value for money.
At the same time, Van Dijk has started to lose the aura of invulnerability he has carried since his £75m switch from Southampton in January 2018.
Van Dijk has received little support by defensive partner Ibrahima Konate's loss of form, along with Milos Kerkez struggling to adapt at left-back. But the renowned star has also fought his own battles, as highlighted by his desperate handball that conceded a penalty in the significant Champions League loss to PSV Eindhoven at Anfield.
It was encapsulated in the 67th minute on Wednesday when Chemsdine Talbi gave Sunderland a deserved lead, Van Dijk surrendering the ball before standing off and averting his body on a 25-yard shot that hit him and looped out of the reach of goalkeeper Alisson.
For a defender of such undoubted greatness, Van Dijk has an peculiar tendency of shying away on the ball, sometimes to Liverpool's cost.
Misfortune at the end, yes, but it was a situation Van Dijk invited with his unusual failure to take charge, Sunderland's Talbi seizing the moment.
"Van Dijk surrenders possession and then he just drops off. It's the mistake. He needs to go to the ball. Him not making the decision means that no one else knows what to do."
"Virgil Van Dijk last season couldn't make a mistake. Every game he was dominant, but right now he's erring and doubting himself."
As with Salah, a player of Van Dijk's pedigree must not be discarded after securing two Premier Leagues, the Champions League, the FA Cup and two EFL Cups in a illustrious Liverpool career.
He has, though, looked a pale imitation of his usual imperious self this season, with the poest ball recovery rate per game during his Liverpool career, while tackles and interceptions are also down on last season.
And, while leadership should not be Van Dijk's exclusive domain alone in a Liverpool team full of experience, it was lacking here. No-one was inspiring a team that once again looked bewildered to take control by the throat.
Van Dijk's difficult night, which ended with him being used as the last resort of acting as an emergency striker, was representative of a deeply underwhelming Liverpool performance - which made Sunday's win at West Ham seem like the anomaly rather than the rule.
Slot kept faith with the side that ended a run of nine losses in 12 games at London Stadium, Salah once more observing from the sidelines.
The Egyptian emerged at the start of the second half as the Kop pinned hopes on him for inspiration. It failed to materialize, with £125m Alexander Isak also anonymous after opening his account with his first league goal for Liverpool on Sunday.
Slot would have been under greater pressure had Florian Wirtz's 81st-minute shot not been turned in off Nordi Mukiele to set up what Liverpool hoped would be a dramatic ending.
Stoppage-time tension came - but at the other end. Liverpool were only saved from humiliation in stoppage time when Federico Chiesa's superb tracking back allowed him to turn Sunderland substitute Wilson Isidor's shot off the line after he had beaten keeper Alisson.
Slot and his fading champions ultimately had to take a point knowing it could have been worse, with Alisson lucky to turn Trai Hume's shot onto the bar in the first half before Omar Alderete headed against the post after the interval.
Liverpool were slow, labored and short on invention. Even the traditional late rally after the equaliser carried scant belief. Displays like this are the reason their attempt to retain the title has collapsed.
But full acknowledgment for the Reds' struggles on Wednesday must be given to Sunderland, who are being rewarded for a summer of notable ambition in the transfer market, coupled with the excellent coaching of Regis le Bris.
The Black Cats were adventurous, assured and threatening.
Sunderland are now sixth in the Premier League with 23 points. It is symptomatic of the manner in which they have embraced life in the Premier League that they will be unhappy they left Anfield without adding two more to their tally.
For Slot and Liverpool, it is back to the drawing board.
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