

Q1: What situations does "this Digimon's stack has 2 or more same-level cards" refer to?
It refers to any situation where 2 or more cards with the same level are found when looking at all of the stacked cards. Example situations include a level 5 Digimon with a level 5 digivolution card, or a level 6 Digimon with 2 level 5 digivolution cards.
Q2: If a text says "XX card with AA or BB," does that mean AA and BB both have to be XX?
Yes, both have to be XX. For example, "1 level 4 or lower Digimon card with the CS trait or that is yellow or black" means either "1 level 4 or lower Digimon card with the CS trait" or "1 level 4 or lower Digimon card that is yellow or black." In both cases, the card must be level 4 or lower.
Lv.5 WereGarurumon EX12-032 R Ultimate | Vaccine | Beastkin/NSo/VB [On Play] [When Digivolving] 1 of your opponent's Digimon or Tamers can't suspend until their turn ends. [When Attacking] If this Digimon's stack has 2 or more same-level cards, it may digivolve into a Digimon card with [Garurumon] in its name or the [NSo] or [VB] trait in the trash with the cost reduced by 2. --- <Decode (Lv.4 or lower w/[Gabumon]/[Garurumon] in name or w/[NSo]/[VB] trait)> (When this Digimon would leave the battle area other than in battle, you may play 1 specified Digimon card from its digivolution cards without paying the cost.)
Lv.5 WereGarurumon EX12-032 R Ultimate | Vaccine | Beastkin/NSo/VB [Digivolve] Lv.4 w/[Garurumon] in name or w/[NSo]/[VB] trait: Cost 3 [DNA Digivolve] Blue/yellow Lv.4 + purple/red Lv.4: Cost 0 [On Play] [When Digivolving] 1 of your opponent's Digimon or Tamers can't suspend until their turn ends. [When Attacking] If this Digimon's stack has 2 or more same-level cards, it may digivolve into a Digimon card with [Garurumon] in its name or the [NSo] or [VB] trait in the trash with the cost reduced by 2. --- <Decode (Lv.4 or lower w/[Gabumon]/[Garurumon] in name or w/[NSo]/[VB] trait)> (When this Digimon would leave the battle area other than in battle, you may play 1 specified Digimon card from its digivolution cards without paying the cost.)
Lv.5 WereGarurumon EX12-032 R
ultimate | Vaccine | Beastkin/NSo/VB
{{DigivolveFromArchetypesOrTraitsOr|3|4|Garurumon|NSo|VB}}
{{DNADigivolveOr|0|Blue|Yellow|5|Purple|Red|5}}
[On Play] [When Digivolving] 1 of your opponent's Digimon or Tamers can't suspend until their turn ends.
[When Attacking] If this Digimon's stack has 2 or more same-level cards, it may digivolve into a Digimon card with [Garurumon] in its name or the [NSo] or [VB] trait in the trash with the cost reduced by 2.
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<Decode (Lv.4 or lower w/[Gabumon]/[Garurumon] in name or w/[NSo]/[VB] trait)>Lv.5 ワーガルルモン EX12-032 R 完全体 | ワクチン種 | 獣人型/NSo/VB 【登場時】【進化時】相手のターン終了まで、相手のデジモン/テイマー1体はレストできない。 【アタック時】このデジモンにLv.の同じカードが2枚以上重ねられているなら、このデジモンをトラッシュの名称に「ガルルモン」を含むか特徴「NSo」/「VB」を持つデジモンカードに支払うコスト-2で進化できる。 --- ≪デコード《Lv.4以下の、名称に「ガブモン」/「ガルルモン」を含むか特徴「NSo」/「VB」》≫(このデジモンがバトル以外でバトルエリアを離れるとき、このデジモンの進化元から、指定のデジモンカード1枚をコストを支払わず登場できる)