Spider-Man: Across the Spider-Verse's MCU line was not approved

Spider-Man: Across the Spider-Verse features a great MCU reference. But the producers revealed it was never approved by Marvel Studios.

Spider-Man: Across the Spider-Verse' is now on digitial: How (and where) to watch every single 'Spider-Man movie' in the Spider-Verse

Across The Spider-Verse Producers Hint at No Way Home Crossover - FandomWire

Marvel Cinematic Universe - Spider-Man - Into The Spider-Verse - Group Wall Poster with Push Pins, 22.375 x 34

Weekend Box Office: SPIDER-MAN: ACROSS THE SPIDER-VERSE Spins a $120.5M Domestic Weekend, $208.6M Global Launch - Boxoffice

Why Spider-Man doesn't need the MCU to be great - Vox

Spider-Man: Across the Spider-Verse confirms the MCU is Earth-199999 - Polygon

Across the Spider-Verse's Canon Events Are a Problem for No Way Home

Spider-Man: Across the Spider-Verse Acknowledges the MCU

Across The Spider-Verse Makes The MCU's Multiverse Failures Even Worse

Across the Spider-Verse directors reveal “huge” scrapped live-action scenes - Dexerto

Spider-Verse PH

Spider-Man: Across the Spider-Verse Tickets Release Date Revealed