The intense attention that has been trained on one elite Liverpool legend shifted to another on Anfield's fresh frustrating night.
The Egyptian forward has come under fire for his poor form this season - and was relegated to the bench for the consecutive Premier League game as the Black Cats arrived on Wednesday.
But it was leader Virgil van Dijk, a peerless defensive bedrock as Liverpool have secured the array of major trophies, whose poor form became the focus during the draw.
Van Dijk, 34, and Salah, 33, both inked lucrative new two-year deals in the summer, with not one Liverpool question asked at the notion of handing contracts to a experienced stars much closer to the end of their careers than the start.
In fact, 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 manager Arne Slot and the club's transfer committee undertook a £450m summer rebuild that has still to demonstrate anything like a good return.
Simultaneously, Van Dijk has started to shed the sense of being untouchable he has held since his £75m transfer from Southampton in January 2018.
Van Dijk has received little support by defensive partner Ibrahima Konate's dramatic dip, along with Milos Kerkez failing to settle at left-back. But the great Dutchman has also fought his own battles, as proved by his panic-stricken handball that conceded a penalty in the heavy 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 backing away and turning his back on a 25-yard shot that struck him and floated out of the reach of goalkeeper Alisson.
For a defender of such unquestionable quality, Van Dijk has an unusual habit of shying away on the ball, sometimes to Liverpool's detriment.
Bad luck at the end, yes, but it was a situation Van Dijk provoked with his atypical failure to act decisively, Sunderland's Talbi seizing the moment.
"Van Dijk gives the ball away 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 was faultless. Every game he was commanding, but right now he's erring and hesitating."
As with Salah, a player of Van Dijk's pedigree must not be written off 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 faded version of his usual commanding presence 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 preserve alone in a Liverpool team full of experience, it was lacking here. No-one was rousing a team that once again looked lost to seize the initiative by the scruff of the neck.
Van Dijk's subpar showing, which ended with him being used as the desperate measure of acting as an last-ditch attacker, was indicative of a deeply underwhelming Liverpool performance - which made Sunday's win at West Ham seem like the exception 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 turned to him for inspiration. It never came, with £125m Alexander Isak also ineffective 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 dramatic ending.
Late drama came - but at the other end. Liverpool were only spared embarrassment 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 struggling title-holders ultimately had to accept the point knowing it could have been worse, with Alisson blessed 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 sluggish, labored and devoid of creativity. Even the typical final push after the equaliser carried little conviction. Displays like this are the reason their title defence has crumbled.
But huge credit for the Reds' struggles on Wednesday must be given to Sunderland, who are being reaping the benefits for a summer of notable ambition in the transfer market, coupled with the excellent coaching of Regis le Bris.
The Black Cats were proactive, confident and threatening.
Sunderland are now sixth in the Premier League with 23 points. It is symptomatic of the manner in which they have grown into 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 back to the drawing board.
Automotive engineer with over a decade of experience in ECU tuning and performance optimization for various vehicle models.
Leah Preston
Leah Preston
Leah Preston
Leah Preston