It refers to when there are 2 or more cards with the same level among all of the stacked cards. Examples include when a level 5 Digimon has a level 5 digivolution card or when a level 6 Digimon has 2 level 5 digivolution cards.

Yes, you can process it. Even if [Kyoko Kuremi] isn't in this Digimon's digivolution cards and this Digimon's stack doesn't have 2 or more same-level cards, this card's [All Turns] effect will unsuspend this Digimon.