"Ant-Man and the Wasp: Quantumania" faced several challenges contributing to its underperformance at the box office. Critics pointed to a convoluted plot and lackluster character development, which made it less engaging for audiences. Additionally, the film's reception was affected by franchise fatigue within the Marvel Cinematic Universe, as viewers grew wary of repetitive themes and diminishing returns. The marketing also struggled to generate excitement, leading to lower ticket sales compared to previous entries in the series.

Yes, "Loki" and "Ant-Man and the Wasp: Quantumania" are connected within the Marvel Cinematic Universe (MCU). Both properties explore themes related to the multiverse and feature the character Kang the Conqueror, played by Jonathan Majors. "Loki" introduces the concept of variants and the multiverse, which sets the stage for Kang's complex role in "Quantumania." The events in "Loki" help establish the narrative groundwork for Kang's motivations and impact on the MCU as a whole.

"Ant-Man and the Wasp: Quantumania" received mixed reviews from critics and audiences. While it opened to strong box office numbers, its overall performance was considered underwhelming compared to expectations for a Marvel film. Critics pointed out issues with the plot and character development, leading to a divide among fans. Ultimately, it wasn't as successful as previous entries in the Marvel Cinematic Universe, leading some to label it a flop in terms of critical reception and long-term box office sustainability.

"Ant-Man and the Wasp: Quantumania" takes place after the events of the Disney+ series "Loki." While "Loki" introduces the concept of the multiverse and features the character He Who Remains, who is a variant of Kang the Conqueror, "Quantumania" further explores Kang's character and his role within the multiverse. The timeline of the Marvel Cinematic Universe places "Quantumania" in Phase Four, following the events of "Loki."