The unforgiving attention that has been trained on one world-class Liverpool icon shifted to another on Anfield's fresh desperate night.
The Egyptian forward has faced examination for his struggles this campaign - and was placed on the substitutes' bench for the consecutive Premier League game as Sunderland arrived on Wednesday.
But it was skipper Virgil van Dijk, a exceptional defensive rock as Liverpool have secured the array of major trophies, whose struggles came under the microscope during the 1-1 draw.
Van Dijk, 34, and Salah, 33, both inked new lucrative two-year deals in the summer, with scarcely a Liverpool question asked at the idea of offering extensions to a experienced stars much nearer to the end of their careers than the start.
Indeed, it was a moment of optimism - but now there is no escaping the harsh truth that levels have fallen worryingly for both.
Liverpool have been susceptible in defence ever since boss Arne Slot and the club's transfer committee began a £450m summer overhaul that has yet to prove anything like its worth.
At the same time, Van Dijk has started to shed the sense of being untouchable he has carried since his £75m transfer from Southampton in January 2018.
Van Dijk has faced additional challenges by defensive partner Ibrahima Konate's loss of form, along with Milos Kerkez struggling to adapt at left-back. But the esteemed defender has also struggled badly, as highlighted by his desperate handball that gave away a penalty in the heavyweight Champions League loss to PSV Eindhoven at Anfield.
It was captured in the 67th minute on Wednesday when Chemsdine Talbi gave Sunderland a well-earned lead, Van Dijk losing possession before retreating and turning his back on a 25-yard shot that struck him and looped out of the reach of goalkeeper Alisson.
For a defender of such undoubted greatness, Van Dijk has an curious trait of shying away on the ball, sometimes to Liverpool's disadvantage.
Ill fortune at the finale, yes, but it was a situation Van Dijk invited with his unusual failure to make a decisive move, Sunderland's Talbi seizing the moment.
"Van Dijk gives the ball away and then he just backs off. It's the incorrect choice. 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 was faultless. Every game he was dominant, but right now he's making mistakes and doubting himself."
As with Salah, a player of Van Dijk's stature must not be dismissed after claiming 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 worst recoveries per game during his Liverpool career, while defensive actions are also down on last season.
And, while leadership should not be Van Dijk's preserve alone in a Liverpool team full of experience, it was absent here. No-one was motivating a team that once again looked lost to seize the initiative by the throat.
Van Dijk's difficult night, which ended with him being used as the desperate measure of acting as an emergency striker, was symptomatic of a horribly mediocre Liverpool performance - which made Sunday's win at West Ham seem like the outlier rather than the standard.
Slot kept faith with the side that stopped a run of nine losses in 12 games at London Stadium, Salah once more observing from the sidelines.
The Egyptian was introduced at the start of the second half as the Kop turned to him for inspiration. It was not forthcoming, with £125m Alexander Isak also anonymous after scoring his first with his first league goal for Liverpool on Sunday.
Slot would have been under increased scrutiny had Florian Wirtz's 81st-minute shot not taken a deflection off Nordi Mukiele to set up what Liverpool hoped would be a thrilling finale.
A late scare came - but at the other end. Liverpool were only spared embarrassment 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 accept the 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, unimaginative and lacking in ideas. Even the traditional late rally after the equaliser carried little conviction. Showings like this are the reason their title defence has collapsed.
But full acknowledgment for the Reds' struggles on Wednesday must be given to Sunderland, who are being seeing the results for a summer of serious ambition in the transfer market, coupled with the fine work of Regis le Bris.
The Black Cats were positive, self-believing and a genuine threat.
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 disappointed they left Anfield without adding two more to their tally.
For Slot and Liverpool, it is time for reflection.
A seasoned journalist with over 15 years of experience covering international affairs and cultural trends.