The unforgiving spotlight that has been trained on one world-class Liverpool great switched to another on Anfield's latest frustrating night.
The Egyptian forward has come under fire for his subpar performances this season - and was placed on the bench for the second successive Premier League game as Sunderland came to town on Wednesday.
But it was captain Virgil van Dijk, a peerless defensive foundation as Liverpool have secured the full collection of major trophies, whose dip in performance took center stage during the stalemate.
Van Dijk, 34, and Salah, 33, both agreed to lucrative new two-year deals in the summer, with barely a Liverpool eyebrow raised at the notion of securing the futures to a veteran duo much nearer to the end of their careers than the start.
In fact, it was a cause of celebration - but now there is no escaping the harsh truth that standards have dropped concerningly for both.
Liverpool have been susceptible in defence ever since manager Arne Slot and the club's transfer committee undertook a £450m summer overhaul that has yet to prove anything like its worth.
Concurrently, Van Dijk has started to lose the air of invincibility he has held since his £75m transfer from Southampton in January 2018.
Van Dijk has received little support by center-back colleague Ibrahima Konate's collapse in form, along with Milos Kerkez failing to settle at left-back. But the great Dutchman has also struggled badly, as proved by his panic-stricken handball that gave away a penalty in the heavyweight Champions League loss to PSV Eindhoven at Anfield.
It was encapsulated in the 67th minute on Wednesday when Chemsdine Talbi gave Sunderland a well-earned lead, Van Dijk losing possession before retreating and turning away on a 25-yard shot that struck him and drifted out of the reach of goalkeeper Alisson.
For a defender of such unquestionable quality, Van Dijk has an curious trait of turning his back on the ball, sometimes to Liverpool's cost.
Bad luck at the end, yes, but it was a situation Van Dijk invited with his unusual failure to take charge, Sunderland's Talbi capitalising.
"Van Dijk surrenders possession and then he just backs off. It's the wrong decision. 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 imperious, but right now he's making mistakes and second-guessing himself."
As with Salah, a player of Van Dijk's pedigree must not be dismissed after winning 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 packed with experience, it was lacking here. No-one was rousing a team that once again looked lost to grab the game by the throat.
Van Dijk's poor display, which ended with him being used as the last resort of acting as an emergency striker, was representative of a horribly mediocre Liverpool performance - which made Sunday's win at West Ham seem like the exception rather than the rule.
Slot persisted 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 came on at the start of the second half as the Kop turned to him for inspiration. It never came, with £125m Alexander Isak also quiet after scoring his first 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 thrilling finale.
Late drama came - but at the other end. Liverpool were only saved from humiliation in stoppage time when Federico Chiesa's outstanding recovery run allowed him to turn Sunderland substitute Wilson Isidor's shot off the line after he had rounded keeper Alisson.
Slot and his fading champions ultimately had to settle for a draw knowing it could have been worse, with Alisson fortunate 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 lethargic, labored and devoid of creativity. Even the customary late surge after the equaliser carried little conviction. Displays like this are the reason their attempt to retain the title has collapsed.
But significant praise for the Reds' struggles on Wednesday must be given to Sunderland, who are being seeing the results for a summer of notable ambition in the transfer market, coupled with the superb management of Regis le Bris.
The Black Cats were proactive, assured and threatening.
Sunderland are now sixth in the Premier League with 23 points. It is symptomatic of the manner in which they have adapted to 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.
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