The unforgiving spotlight that has been trained on one global Liverpool great shifted to another on Anfield's latest disappointing night.
The Egyptian forward has faced examination for his subpar performances this season - and was consigned to the substitutes' bench for the second straight Premier League game as the Black Cats visited on Wednesday.
But it was skipper Virgil van Dijk, a peerless defensive foundation as Liverpool have collected the array of major prizes, whose dip in performance took center stage during the draw.
Van Dijk, 34, and Salah, 33, both signed new lucrative two-year deals in the summer, with not one Liverpool concern voiced at the prospect of offering extensions to a seasoned pair much approaching the end of their careers than the start.
Indeed, it was a reason for joy - but now there is no avoiding the stark fact that standards have dropped worryingly for both.
Liverpool have been vulnerable in defence ever since boss Arne Slot and the club's scouting department began a £450m summer refit that has still to demonstrate anything like value for money.
At the same time, Van Dijk has started to shed the air of invincibility he has held since his £75m switch from Southampton in January 2018.
Van Dijk has faced additional challenges by fellow defender Ibrahima Konate's dramatic dip, along with Milos Kerkez not finding his feet at left-back. But the renowned star has also struggled badly, as demonstrated by his rash handball that conceded a penalty in the heavy Champions League loss to PSV Eindhoven at Anfield.
It was captured in the 67th minute on Wednesday when Chemsdine Talbi gave Sunderland a merited lead, Van Dijk giving the ball away before retreating and averting his body on a 25-yard shot that hit him and floated 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 disadvantage.
Misfortune at the conclusion, yes, but it was a situation Van Dijk provoked with his atypical failure to act decisively, Sunderland's Talbi taking advantage.
"Van Dijk gives the ball away and then he just retreats. 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 imperious, but right now he's erring and second-guessing himself."
As with Salah, a player of Van Dijk's caliber must not be dismissed after claiming two Premier Leagues, the Champions League, the FA Cup and two EFL Cups in a glittering Liverpool career.
He has, though, looked a pale imitation of his usual dominant persona this season, with the poest ball recovery rate per game during his Liverpool career, while key defensive stats are also down on last season.
And, while leadership should not be Van Dijk's sole responsibility alone in a Liverpool team packed with experience, it was lacking here. No-one was rousing a team that once again looked bewildered to seize the initiative by the initiative.
Van Dijk's difficult night, which ended with him being used as the desperate measure of acting as an emergency striker, was indicative of a distinctly poor Liverpool performance - which made Sunday's win at West Ham seem like the anomaly rather than the rule.
Slot persisted with the side that halted a run of nine losses in 12 games at London Stadium, Salah once more watching from the sidelines.
The Egyptian emerged at the start of the second half as the Kop pinned hopes on him for inspiration. It never came, with £125m Alexander Isak also ineffective after getting off the mark with his first league goal for Liverpool on Sunday.
Slot would have been under even more pressure 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.
Stoppage-time tension 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 beaten keeper Alisson.
Slot and his underperforming defending 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 lethargic, labored and lacking in ideas. Even the customary late surge after the equaliser carried scant belief. Showings like this are the reason their title defence has fallen apart.
But huge credit for the Reds' struggles on Wednesday must be given to Sunderland, who are being reaping the benefits for a summer of clear intent in the transfer market, coupled with the fine work of Regis le Bris.
The Black Cats were positive, confident and dangerous.
Sunderland are now sixth in the Premier League with 23 points. It is telling of the manner in which they have adapted to 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 time for reflection.
Dr. Elara Voss is a tech analyst and futurist with a Ph.D. in Computer Science, specializing in emerging technologies and their societal impact.