> Does that hold in a turn base system? Whether they played at the start of the minute or its end, they all knew the results of the last turn when they started bidding.

Not quite. In a turn based board game, sure, because literally nothing relevant happens outside the context of the game. In real life, plenty happens outside the context of a hypothetical Chicago turn. Most relevantly, New York happens.

(Actually, it’s New Jersey. Land is very expensive in NY, and data centers are fairly large, so “New York” finance mostly happens in Secaucus, NJ.)