We took about 30 minutes learning and got distracted in conversation, so I'm guessing we were really closer to around 60-90 minutes playtime. Next play we'll pay particular attention to any rules that misplaying could cause the game to go on longer. We discussed it some more and think maybe we played too conservatively and used rest several turns in a row to essentially reset the game.
For draw piles, we shuffled the last deck and went through a decent portion of the deck, but the game ended before we drew the final final card. We were close, so I could imagine a rare match where the game would need to account for exhausting all cards.