Los Angeles Lakers forward LeBron James throws chalk in the...

Los Angeles Lakers forward LeBron James throws chalk in the air before an NBA game against the Golden State in San Francisco on April 9. Credit: AP/Jeff Chiu

When you wait 53 years for a championship, it’s understandable that the celebration is going to last a while and for the Knicks, this one lasted nearly as long as the latest decision of LeBron James — appearances on assorted television shows, at Fanatics Fest and nearly every sporting good store in the tri-state area.

While Jalen Brunson, Karl-Anthony Towns and the rest of the cast are feted around New York City this summer, they can expect it to go on for decades to come. Their place in New York history is secured and maybe there are still some fans sipping champagne in alleys along the parade route through the Canyon of Heroes. But eventually the celebrations will subside and training camp will open and the Knicks will have to get back to work and attempt to do what no team seems to be able to do anymore.

Repeat.

And that challenge just got, well, more challenging, as the remaking of the Philadelphia 76ers was capped Friday morning with James announcing that he was joining a team that already had drastically changed from the roster that the Knicks swept out of the postseason just months ago.

The Knicks disposed of the Sixers easily and Philadelphia's front office took note, making huge moves while keeping their three most important pieces in place. Tyrese Maxey and VJ Edgecombe, the young backcourt, was always the future for the franchise. Joel Embiid is the “what if,” a former MVP whose health has always been a bigger question than his performance. But added to the mix already was Jaylen Brown, Dean Wade and Anfernee Simons.

Add James and on paper it’s an imposing starting lineup and depth that, if everything falls right, could contend with any team. But it’s worth considering in the breathless celebrations — could an entire fan base run up the stairs and celebrate like Rocky? — whether this really will work as well on the court as it does on paper.

James will turn 42 during the season. Embiid’s health is a constant issue, since he arrived in the NBA. If there were questions about Brown working together with Jayson Tatum in Boston, how will it work now when, if — again, HUGE if — everyone is healthy, that the Sixers will have to figure out how to share the ball among five offensive forces.

It’s not just who gets the ball. James seemed to take a secondary role to Luka Doncic in Los Angeles and accepted it. But there were times where the Sixers seemed better with Embiid off the floor and Maxey the clear No. 1 option.

The Knicks don’t enter the season with these questions.

While the Knicks were being honored and toasted around town, the rest of the league set about business with a goal of figuring out how to get past the Knicks, examining the blueprint of what Leon Rose and his front office put in place. Brunson’s game film will be studied and analytic staffs will work to plot out a way to get the ball out of his hands — something that no one has figured out yet.

The competition improved on paper, but the Knicks kept their roster nearly intact, the only change in the rotation coming with the departure of Mitchell Robinson to Boston as a free agent and the Knicks replacing him with Andre Drummond, who, coincidentally, departed the Sixers. While Philadelphia signed Knicks’ third-string center Ariel Hukporti, they may regret losing the veteran backup in Drummond for the times that Embiid will sit out.

Repeating is never easy in the NBA’s system of parity, influenced by the salary cap and fear of the second apron — the Knicks becoming the eighth different team to win a title in the last eight seasons.

The Knicks are basically bringing back a group for a third straight season together. Health remains a vital factor for any team, the Knicks included. But chemistry questions have been settled. Did anyone look unhappy with their role as they were soaking each other in champagne?

They’re not the only team in this run of new champions to keep the key pieces intact. Oklahoma City brought back their core last season and were knocked out in the Western Conference finals. Boston ran it back and were dethroned by the Knicks in the Eastern Conference semifinals two years ago. Denver, before them, kept the main pieces in place. It goes all the way back to Golden State in 2018 when they repeated as champs and kept their starting five together to do it.

The road back is going to be more difficult. The rebuilt Sixers will be a challenge. Giannis Antetokounmpo in Miami changes that franchise. Boston remains an obstacle, just like Detroit, Indiana, Atlanta and Cleveland.

But while others won the summer on paper, the Knicks remain the champions on the court.

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