Inzaghi described the scale of the challenge that lay before his side in Orlando on Monday as akin to climbing Mount Everest without oxygen.
"But we were great," he said. "We did our best and deserved the win." Even Pep Guardiola agreed, after seeing his even more expensively assembled side repeatedly torn to shreds on transitions during a shock 4-3 loss.
Former England winger Andros Townsend claimed on DAZN, "Al-Hilal have shocked the world", and while that may have been a slight exaggeration, the result certainly ranks as one of the most significant in the history of Saudi Arabian football - as underlined by the fact that it ended a 20-game winless run for Asian teams against European opposition in FIFA club competition.
For the likes of Milinkovic-Savic, meanwhile, reaching the quarter-finals, where Al-Hilal will next face Fluminense, also represents a form of vindication, the perfect response to those of us who had criticised the Serb and several others for leaving one of Europe's 'Big Five' leagues to spend their peak years in the Pro League.
"Let's see if they will criticise us now," the former Lazio midfielder said. "We showed them that the Saudi League is not like how they speak about it."
It has certainly cast the competition in a far more valuable light. An unsurprisingly ecstatic Infantino even went so far as to hail PIF-backed Al-Hilal beating Abu Dhabi-funded City as the dawn of a "NEW ERA OF CLUB FOOTBALL".
Again, that's probably a tad hyperbolic, but he's right in a way, as what the 'oil-money derby' did prove is that Saudi sides are not just capable of challenging Premier League clubs in the transfer market. Evidently, they can also now compete with them on the field - particularly if they, much like Qatari-owned Paris Saint-Germain, continue to focus more on sensible signings rather than bling-bling buys.
Indeed, the most interesting aspect of Al-Hilal's Stateside success is that they've looked like a real team rather than a group of money-driven mercenaries.