What is the cumulative recommended time for Team Sealed deck registration and deck construction?

The cumulative recommended time for Team Sealed deck registration and deck construction is indeed 80 minutes. This duration is established to accommodate the needs of teams that must collaboratively register their decks and construct them in accordance with the rules.

In Team Sealed events, each player typically has to register the cards they will use and then work together with their teammates to build the best possible decks from the same pool of cards. Given the additional coordination required among teammates, the recommended time must be sufficient to ensure that all participants can complete these tasks without rushing and can make thoughtful decisions about their deck-building strategies.

The other time options do not provide enough time to effectively fulfill both registration and deck construction for a team format, which contributes to why those options are not the best fit for the cumulative time recommended.