For years, the American Express welcome-bonus ecosystem has operated around two competing ideas.

The official rule is simple. Amex says welcome offers are generally available once per lifetime.

Alongside that, a second idea has floated around points forums, Reddit threads, and Flyertalk discussions for years: that Amex’s memory may not actually be permanent.

You see variations of it constantly. Five years. Seven years. Eventually you become eligible again. Amex forgets after long enough.

Most of the discussion around this is vague, anecdotal, or tied to targeted no-lifetime-language offers.

I recently ended up with a cleaner datapoint than usual. Not because I was specifically trying to test the theory, but because a live Hilton booking created a reason to try.

The trigger was a Hilton Surpass welcome offer that included 130,000 Hilton Honors points and a Free Night Reward after $3,000 spend.

The Free Night Reward mattered more than the points. I already had an existing Hilton booking where another uncapped Free Night Reward could potentially replace a 240,000-point night. That situation became the basis for a separate piece: “Trying to Do It Again: Manufacturing Another FNC.” That made the economics unusually attractive if the bonus attached successfully.

There was one obvious complication: my wife had held a Surpass before.

Working backwards through historical statements and account history, we were able to narrow the timeline down reasonably tightly.

Two Hilton cards that were later upgraded into Aspire cards appeared to originate as Surpass cards, one opened in late 2018 and another in mid-2019. The more recent card remained in Surpass form until it was downgraded to the no-fee Hilton card in July 2020, before eventually being upgraded to Aspire in 2024.

That put us in a gray zone: between six and seven years since the most recent approval, and just under six years since the card was last held in Surpass form.

That is well beyond the short-cycle territory where approval is generally considered unlikely. But it is also nowhere near “lifetime” in any literal sense.

This is where the folklore around Amex begins.

For years, people have speculated that Amex’s practical lookback period softens somewhere around the six-to-seven-year mark. The theory has never really been confirmed publicly, but enough scattered datapoints accumulated that the idea persisted.

At the same time, Amex built increasingly sophisticated anti-churning systems: popup jail, family-language restrictions, tighter bonus enforcement, and more aggressive eligibility controls.

That combination created an odd dynamic. The official language became stricter, while isolated long-gap approvals still occasionally appeared.

Most datapoints, however, have weaknesses. Many involve targeted no-lifetime-language offers, incomplete timelines, or situations where approval occurred but nobody ever confirmed whether the bonus actually attached.

This case turned out cleaner than most.

The application did not go straight through.

Initially, the application hit a different constraint entirely: the practical Amex five-credit-card limit. Another account was closed to create space, but even after waiting several days the system had still not fully updated, which the reconsideration agent identified as the initial obstacle.

Even after that, the process moved into manual review rather than instant approval.

What stood out was what did not happen. There was no popup, no warning that the applicant was ineligible for the bonus, and no indication that prior ownership had automatically disqualified the offer.

The application was eventually approved after reconsideration and back-office review.

Still, approval alone does not prove bonus eligibility. Amex has become increasingly capable of approving cards while withholding welcome offers. The real question remained unresolved until the spending requirement was completed.

The required spend was completed almost immediately after approval.

Shortly after completing the $3,000 spend, both the full 130,000 Hilton Honors points and the Free Night Reward posted successfully.

In this instance, with prior Surpass ownership just short of six years earlier, the full welcome offer attached on a standard public offer.

I do not think the correct conclusion is that Hilton Surpass can simply be churned every six years. That is too simplistic.

The better conclusion is probably that somewhere around the six-to-seven-year range, Amex’s practical memory appears to become materially softer than the official language suggests.

That does not make approval guaranteed. It does not mean popup jail disappears. It does not mean every applicant will be treated the same way.

But it does suggest the system is more nuanced than the literal wording implies.

The welcome offer itself turned out to be only half the story.

Whether the new Free Night Reward would post in time to restructure the existing Calala booking became its own story entirely.