So this is as far as the FA Cup adventure goes, this 2018 Swansea City side will not follow in the footsteps of their 1926 and 1964 counterparts on a day that served up a warning for Carlos Carvalhal’s men.

They can have no complaints that a trip to Wembley does not await them next month.

This was not like the January meeting between these sides where the hosts had genuine cause for grievance, Swansea were outclassed, outplayed, out-thought and outfought. This defeat was every bit as comprehensive as the scoreline suggests. It could easily have been worse.

Christian Eriksen — so often a thorn in Swansea’s side — was wonderful for the visitors, taking his brace with aplomb and tormenting his opponents every time he got on the ball.

Tottenham Hotspur's Christian Eriksen scores his side's first goal against Swansea

The Dane now has eight goals and five assists in 10 games against the Welsh club, while likes of Lucas Moura, Erik Lamela and Son Heung-min were pretty close behind with Spurs in irresistible form.

They were excellent, Swansea were dreadful.

The disappointment was all the greater given Swansea had not played an FA Cup fixture of this size in 54 years.

To put that in context, back then Alec Douglas Home was in 10 Downing Street, the Rolling Stones were about to release their first album, Zulu and Dr Strangelove were box office hits and Cassius Clay had just beaten Sonny Liston to become world heavyweight champion.

A pint of beer cost 10p, a season ticket £8.50, while £10 notes were being issued for the first time since the Second World War.

When you’ve waited that long, the least you would want in front of your own fans is to take the game to your opponents, to give the best possible account of yourself.

Swansea did not come anywhere near that, aside from showing a brief spark in the opening exchanges before Eriksen’s brilliant opener.

Unlike Clay against Liston, they did not land a glove on their opponents.

Swansea City goalkeeper Kristoffer Nordfeldt fails to stop the ball as Tottenham Hotspur's Christian Eriksen scores

The hosts were passive, the game seemed to pass them by as opposed to them actually being involved as integral figures in a meaningful contest.

There is a reason Swansea’s visits to this stage of the tournament have been so infrequent, they cannot count on these opportunities coming up on a regular basis.

Whatever the outcome of the battle to stay in the Premier League, this was an opportunity missed and there will surely be some players involved here who might have cause to look back at this with some regret should this be as close as they get to major silverware.

It had all started so promisingly when Tammy Abraham spun away from Davinson Sanchez to drive forward and force former Swan Michel Vorm to race out and push the ball away as Nathan Dyer closed in with just over a minute on the clock.

But those glimmers of light were extinguished when Eriksen gave Spurs an 11th minute lead.

Swansea City's Tammy Abraham and Tottenham Hotspur's Kieran Trippier battle for the ball

Martin Olsson was dispossessed by Lamela — and as Swansea playera and manager appealed for a foul — the visitors broke with the Argentinian simply feeding Eriksen who bent a brilliant strike beyond Kristoffer Nordfeldt with no pressure to worry him.

It seemed to sap the life from Swansea, with Moura failing to capitalise after lovely skill on the edge of the box soon after and Son seeing a goal chalked off for offside — with VAR being used to confirm the decision which looked fiendishly close to call even with the technology at hand.

Swansea were all at sea, unable to keep the ball or exert sufficient pressure without it, but Nordfeldt looked as though he had got them to the interval just a solitary goal down as he tipped another stunning Eriksen strike onto the bar.

However, he could not deny Lamela in first-half stoppage time as a loose pass again sent Tottenham surging forward. Tom Carroll half-heartedly tried to foul him but Lamela shrugged off the challenge and was afforded all the time he wanted to bend the ball past Kyle Bartley into the bottom corner.

Referee Kevin Friend consults VAR before ruling Son Heung-Min's Spurs goal offside against Swansea City

Carvalhal sent on Luciano Narsingh for Kyle Naughton at the break and Swansea nearly found a way back into the game when Martin Olsson’s fierce volley was parried by Vorm, but Abraham could only tamely head the rebound at the Dutchman for a comfortable save.

From that point, any prospect of a Swansea comeback was gone.

Just past the hour mark Eriksen put it beyond doubt, firing low from a Moura lay-off as Spurs made their own history by reaching back-to-back FA Cup finals for the first time in 36 years,

Swansea now have the sole focus of remaining in the top-flight.

They have been vastly-improved under Carvalhal and it would be unfair to draw too many conclusions from one performance as to what it might mean for the coming eight league fixtures.

Three defeats in 17 remains an impressive record, and aberrations and bad days at the office can happen.

It just served up a reminder they continue to walk a thin line. More good days than bad are going to be needed and a big step forward will be required at Old Trafford when league hostilities resume.

The Ayew brothers were particularly missed, with Carvalhal starved of genuine options on the bench without arguably his two best attacking options absent. Once behind, there was little with which to change the game and he will be grateful of Andre Ayew and Andy King’s availability next time out.

Regardless, such a limp exit at such an advanced stage of any tournament has to be classed as a disappointment, but the focus will now move from a 54-year wait to the quest for eight successive years of Premier League football.